MESON Chess Problem Database
Problem Display
PID: 267229 (7K/6NQ/n2Bp3/1pp2n2/1Rb1k2b/1N1R4/3PP3/8 w - - 0 1)
Allen, Frederick B
Sunday Referee, 1938
(First published on Sun Jun 12 1938)
#2
9 + 8
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Qh1#
- 1...Bf2
- 2.Qh1#
- 1...Bg3
- 2.Qh1#
- 1...Bg5
- 2.Qh1#
- 1...Bf6
- 2.Qh1#
- 1...Be7
- 2.Qh1#
- 1...Bd8
- 2.Qh1#
- 1...Sxb4
- 2.Sxc5#
- 1...Sc7
- 2.Sxc5#
- 1...Sb8
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...e5
- 2.Qxf5#
- 1...Be1
- Tries
- 1.Kg8?
- 1...Sxb4
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...Be1
- 2.Qh1#
- 1...Bf2
- 2.Qh1#
- 1...Bg3
- 2.Qh1#
- 1...Bg5
- 2.Qh1#
- 1...Bf6
- 2.Qh1#
- 1...Be7
- 2.Qh1#
- 1...Bd8
- 2.Qh1#
- 1...Sc7
- 2.Sxc5#
- 1...Sb8
- 2.Sxc5#
- 1...e5+!
- 1...Sxb4
- 1.Sxf5?
- threat
- 2.Se3#
- 2.Sg3#
- 2.Sxh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Bf6+
- 2.Sg7#
- 1...exf5
- 2.Qb7#
- 1...Be1
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Bf2
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Bg3
- 2.Se3#
- 2.Sxg3#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Bg5
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...Be7
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Sxe7#
- 2.Sg7#
- 1...Bd8
- 2.Se3#
- 2.Sg3#
- 2.Sh4#
- 2.Sh6#
- 2.Se7#
- 2.Sg7#
- 1...e5!
- threat
- 1.Sxe6?
- threat
- 2.Qb7#
- 1...Sxb4
- 2.Sbxc5#
- 2.Sexc5#
- 1...cxb4
- 2.Rd4#
- 1...Be7
- 2.Qh1#
- 1...Sc7
- 2.Sbxc5#
- 2.Sexc5#
- 1...Sb8
- 2.Sbxc5#
- 2.Sexc5#
- 1...Bf6+!
- threat
- 1.Se8?
- threat
- 2.Qb7#
- 1...Bf6+
- 2.Sxf6#
- 1...Sxb4
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...Be7
- 2.Qh1#
- 1...Sc7
- 2.Sxc5#
- 1...Sb8
- 2.Sxc5#
- 1...e5!
- threat
- 1.Bg3?
- 1...Sxb4
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...Bg5
- 2.Qh1#
- 1...Bf6
- 2.Qh1#
- 1...Be7
- 2.Qh1#
- 1...Bd8
- 2.Qh1#
- 1...Sc7
- 2.Sxc5#
- 1...Sb8
- 2.Sxc5#
- 1...e5
- 2.Qxf5#
- 1...Bxg3!
- 1...Sxb4
- 1.Bc7?
- 1...Sxb4
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...e5
- 2.Qxf5#
- 1...Be1
- 2.Qh1#
- 1...Bf2
- 2.Qh1#
- 1...Bg3
- 2.Qh1#
- 1...Bg5
- 2.Qh1#
- 1...Bf6
- 2.Qh1#
- 1...Be7
- 2.Qh1#
- 1...Bd8
- 2.Qh1#
- 1...Sb8
- 2.Sxc5#
- 1...Sxc7!
- 1...Sxb4
- 1.Qg6?
- threat
- 2.Qg2#
- 2.Qg4#
- 2.Qxe6#
- 1...Sxb4
- 2.Sxc5#
- 2.Qg2#
- 2.Qg4#
- 1...cxb4
- 2.Rd4#
- 2.Qg2#
- 2.Qg4#
- 1...e5
- 2.Qxf5#
- 2.Qg4#
- 1...Bg5
- 2.Qxe6#
- 1...Bf6
- 2.Qg2#
- 2.Qg4#
- 1...Sc7
- 2.Sxc5#
- 2.Qg2#
- 2.Qg4#
- 1...Bg3!
- threat
- 1.Qh5?
- threat
- 2.Qf3#
- 2.Qg4#
- 1...Bg3
- 2.Qf3#
- 2.Qh1#
- 1...Bg5
- 2.Qf3#
- 2.Qh1#
- 1...Se3
- 2.Rxe3#
- 2.Qf3#
- 2.Qe5#
- 1...Sd4
- 2.Re3#
- 2.Qe5#
- 1...Sh6
- 2.Re3#
- 2.Qf3#
- 2.Qe5#
- 1...Sxd6!
- threat
- 1.Kg8?
- Keys
- 1.Sh5!
- threat
- 2.Qb7#
- 1...Bf6+
- 2.Sxf6#
- 1...Sxb4
- 2.Sxc5#
- 1...cxb4
- 2.Rd4#
- 1...Be7
- 2.Sg3#
- 1...Sc7
- 2.Sxc5#
- 1...Sb8
- 2.Sxc5#
- threat
- 1.Sh5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- B(c);OGATE::QAB(H)
- B(c);OGATE,P_PINS(G)::QAB(H)
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- S(g);N_GUARD::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- P(h);N_GUARD::QAB1(H),XS(f)
- Tries
- Try
- K(I);P-FLIGHT
- Vars
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- B(c);OGATE::QAB(H)
- S(g);N_GUARD::S(C),XP(e)
- Refutation
- P(h);CHECK
- Try
- S(G);XS(f)
- Threat
- DUALS(6)
- Vars
- B(c);CHECK::QAB(H)+S(G)
- P(h);P_SPINP(h),SBLOCK,XS(G)::QAB(H)
- Refutation
- P(h);
- Try
- S(G);XP(h)
- Threat
- QAB(H)
- Vars
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- B(c);OGATE::QAB(H)
- Refutation
- B(c);CHECK
- Try
- S(G);
- Threat
- QAB(H)
- Vars
- B(c);CHECK,N_GUARD::S(G),XB(c)
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- B(c);OGATE::QAB(H)
- S(g);N_GUARD::S(C),XP(e)
- Refutation
- P(h);
- Try
- B(F);
- Vars
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- B(c);OGATE::QAB(H)
- B(c);OGATE,P_PINS(G)::QAB(H)
- S(g);N_GUARD::S(C),XP(e)
- P(h);N_GUARD::QAB1(H),XS(f)
- Refutation
- B(c);XB(F)
- Try
- B(F);
- Vars
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- P(h);N_GUARD::QAB1(H),XS(f)
- B(c);OGATE::QAB(H)
- B(c);OGATE,P_PINS(G)::QAB(H)
- S(g);N_GUARD::S(C),XP(e)
- Refutation
- S(g);XB(F)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(c);::QAR2(H),XP(h)
- Refutation
- B(c);
- Try
- Q(H);N_PINS(f)
- Threat
- DUALS(2)
- Refutation
- S(f);XB(F)
- Try
- Actual
- S(G);
- Threat
- QAB(H)
- Vars
- B(c);CHECK,N_GUARD::S(G),XB(c)
- S(g);N_GUARD,N_SPINB(a),XR(E)::S(C),XP(e)
- P(e);N_GUARD,N_SPINB(a),XR(E)::R1(D)
- B(c);N_GUARD::S(G)
- S(g);N_GUARD::S(C),XP(e)
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