MESON Chess Problem Database
Problem Display
PID: 96874 (n4N2/1r1p1p2/3P1kp1/2RbRNn1/8/8/1Q6/2K5 w - - 0 1)
Wenman, Francis Percival (aka Percy Wenman)
200 Assorted Problems (Wenman), 1945
#2
7 + 8
| 5454 | Near Snap | 2009 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Sxd7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rexd5#
- 1...Rc7
- 2.Rxd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Re6#
- 1...Ba2
- 2.Re6#
- 1...Bg2
- 2.Re6#
- 1...Bb3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf3
- 2.Re6#
- 1...Bc4
- 2.Re6#
- 1...Be4
- 2.Re6#
- 1...Bc6
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Sb6
- 2.Rexd5#
- 1...Sc7
- 2.Sxd7#
- 1...gxf5
- 2.Re6#
- 1...Rxb2
- Tries
- 1.Rc2?
- 1...Rxb2
- 2.Sxd7#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rxd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Rb5#
- 1...Ba2
- 2.Rb5#
- 1...Bg2
- 2.Rb5#
- 1...Bb3
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rd5#
- 1...Bf3
- 2.Rb5#
- 1...Bc4
- 2.Rb5#
- 1...Be4
- 2.Rb5#
- 1...Bc6
- 2.Rb5#
- 1...Be6
- 2.Rb5#
- 1...Sb6
- 2.Rxd5#
- 1...Sc7
- 2.Sxd7#
- 1...Rc7!
- 1...Rxb2
- 1.Ra5?
- 1...Rxb2
- 2.Sxd7#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rexd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Reb5#
- 2.Re6#
- 1...Ba2
- 2.Reb5#
- 2.Re6#
- 1...Bg2
- 2.Reb5#
- 2.Re6#
- 1...Bb3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Reb5#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf3
- 2.Reb5#
- 2.Re6#
- 1...Bc4
- 2.Reb5#
- 2.Re6#
- 1...Be4
- 2.Reb5#
- 2.Re6#
- 1...Bc6
- 2.Reb5#
- 2.Re6#
- 1...Be6
- 2.Reb5#
- 2.Rxe6#
- 1...Sb6
- 2.Rexd5#
- 1...Sc7
- 2.Sxd7#
- 1...Rc7+!
- 1...Rxb2
- 1.Rb5?
- threat
- 2.Rexd5#
- 1...Rxb5
- 2.Sxd7#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Bh1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Ba2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bg2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bb3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be4
- 2.Rxe4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Rec5#
- 2.Red5#
- 2.Rxe6#
- 1...Rc7+!
- threat
- 1.Rcxd5?
- threat
- 2.Re6#
- 1...Rxb2
- 2.Sxd7#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rc7+!
- threat
- 1.Rc6?
- 1...Rxb2
- 2.Sxd7#
- 1...Bxc6
- 2.Rb5#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rxd5#
- 1...Rc7
- 2.Rxd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Rb5#
- 1...Ba2
- 2.Rb5#
- 1...Bg2
- 2.Rb5#
- 1...Bb3
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rd5#
- 1...Bf3
- 2.Rb5#
- 1...Bc4
- 2.Rb5#
- 1...Be4
- 2.Rb5#
- 1...Be6
- 2.Rb5#
- 1...Sb6
- 2.Rxd5#
- 1...Sc7
- 2.Sxd7#
- 1...dxc6!
- 1...Rxb2
- 1.Rc7?
- threat
- 2.Sxd7#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Bc6
- 2.Rb5#
- 1...Be6
- 2.Rb5#
- 1...Sb6
- 2.Rxd5#
- 1...Rxc7+!
- threat
- 1.Rc8?
- 1...Rxb2
- 2.Sxd7#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rxd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Rb5#
- 1...Ba2
- 2.Rb5#
- 1...Bg2
- 2.Rb5#
- 1...Bb3
- 2.Ra5#
- 2.Rb5#
- 2.Rec5#
- 2.Rd5#
- 1...Bf3
- 2.Rb5#
- 1...Bc4
- 2.Rb5#
- 1...Be4
- 2.Rb5#
- 1...Bc6
- 2.Rb5#
- 1...Be6
- 2.Rb5#
- 1...Sb6
- 2.Rxd5#
- 1...Sc7
- 2.Sxd7#
- 1...Rc7+!
- 1...Rxb2
- 1.Re4+?
- 1...Kxf5
- 2.Qe5#
- 1...Rxb2!
- 1...Kxf5
- 1.Qc3?
- threat
- 2.Rexd5#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Bh1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Ba2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bg2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bb3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be4
- 2.Rxe4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Rxe6#
- 1...Rb1+!
- threat
- 1.Qd4?
- threat
- 2.Rexd5#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb4
- 2.Sxd7#
- 1...Bh1
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Ba2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bg2
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bb3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bf3
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc4
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be4
- 2.Rxe4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Bc6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Re6#
- 2.Re7#
- 2.Re8#
- 1...Be6
- 2.Re1#
- 2.Re2#
- 2.Re3#
- 2.Re4#
- 2.Red5#
- 2.Rxe6#
- 1...Rb1+!
- threat
- 1.Qh2?
- threat
- 2.Qh8#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb1+!
- threat
- 1.Rc2?
- Keys
- 1.Rc4!
- 1...Rxb2
- 2.Sxd7#
- 1...Bxc4
- 2.Rb5#
- 1...gxf5
- 2.Re6#
- 1...Sf3
- 2.Sh7#
- 1...Sh3
- 2.Sh7#
- 1...Se4
- 2.Sh7#
- 1...Se6
- 2.Sh7#
- 1...Sh7
- 2.Sxh7#
- 1...Rb3
- 2.Sxd7#
- 1...Rb4
- 2.Sxd7#
- 1...Rb5
- 2.Sxd7#
- 1...Rb6
- 2.Sxd7#
- 1...Ra7
- 2.Rxd5#
- 1...Rc7
- 2.Rxd5#
- 1...Rb8
- 2.Sxd7#
- 1...Bh1
- 2.Rb5#
- 1...Bg2
- 2.Rb5#
- 1...Bf3
- 2.Rb5#
- 1...Be4
- 2.Rb5#
- 1...Bc6
- 2.Rb5#
- 1...Be6
- 2.Rb5#
- 1...Sb6
- 2.Rxd5#
- 1...Sc7
- 2.Sxd7#
- 1...Rxb2
- 1.Rc4!
Anticipated by 21390(1918), 21391(1918), 110631(1918)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- R(e);N_GUARD,P_PINR(C)::QAB(B)+R(D),XB(a)
- B(a);::QAB(B)+R(D),DCHECK
- B(a);::QAB(B)+R(D),DCHECK,XB(a)
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- Tries
- Try
- R(C);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- B(a);OGATE::QAB(B)+R(D)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
- Refutation
- R(e);P_PINR(C)
- Try
- R(C);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
- Refutation
- R(e);CHECK
- Try
- R(C);
- Threat
- QAB(B)+R(D),XB(a)
- Vars
- R(e);N_GUARD,XR(C)::S(G),XP(f)
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- Refutation
- R(e);CHECK
- Try
- R(C);XB(a)
- Threat
- QAB(B)+R(D),DCHECK
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- Refutation
- R(e);CHECK
- Try
- R(C);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- B(a);OGATE,XR(C)::QAB(B)+R(D)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- R(e);N_GUARD,P_PINR(C)::QAB(B)+R(D),XB(a)
- B(a);OGATE::QAB(B)+R(D)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
- Refutation
- P(f);XR(C)
- Try
- R(C);
- Threat
- S(G),XP(f)
- Vars
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- B(a);OGATE::QAB(B)+R(D)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- Refutation
- R(e);CHECK,XR(C)
- Try
- R(C);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- B(a);OGATE::QAB(B)+R(D)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
- Refutation
- R(e);CHECK
- Try
- R(D);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINB(a),XS(E)::QAR1(B)
- Refutation
- R(e);XQ(B)
- Try
- Q(B);
- Threat
- QAB(B)+R(D),XB(a)
- Vars
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- Refutation
- R(e);CHECK
- Try
- Q(B);
- Threat
- QAB(B)+R(D),XB(a)
- Vars
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- Refutation
- R(e);CHECK
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- Refutation
- R(e);CHECK
- Try
- Actual
- R(C);
- Vars
- R(e);N_GUARD,XQ(B)::S(G),XP(f)
- B(a);OGATE,XR(C)::QAB(B)+R(D)
- P(d);SBLOCK,XS(E)::QAB(B)+R(D),DCHECK
- S(b);N_GUARD::S(G)
- S(b);N_GUARD::S(G),XS(b)
- R(e);N_GUARD::S(G),XP(f)
- R(e);N_GUARD::QAB(B)+R(D),XB(a)
- R(e);N_GUARD,P_PINR(C)::QAB(B)+R(D),XB(a)
- B(a);OGATE::QAB(B)+R(D)
- S(h);S_CUTR(e)::QAB(B)+R(D),XB(a)
- S(h);S_CUTR(e)::S(G),XP(f)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).