MESON Chess Problem Database
Problem Display
PID: 277874 (2n5/1K1p4/N2p1RN1/bp1k1p1n/2R5/8/4Q3/1b1r2B1 w - - 0 1)
Beal, Edward W
diagrammes, 1981
#2
7 + 10
SOLUTION
- SOUND
- Sets
- 1...Rc1
- 2.Rd4#
- 1...Re1
- 2.Rd4#
- 1...Rf1
- 2.Rd4#
- 1...Rd4
- 2.Rxd4#
- 1...Ba2
- 2.Rxf5#
- 1...Bd3
- 2.Rd4#
- 1...Be1
- 2.Sc7#
- 1...Bd2
- 2.Sc7#
- 2.Rd4#
- 1...Bc3
- 2.Sc7#
- 1...Bb4
- 2.Sxb4#
- 2.Sc7#
- 1...Bb6
- 2.Sb4#
- 1...Bc7
- 2.Sb4#
- 2.Sxc7#
- 1...Bd8
- 2.Sb4#
- 1...Sg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sxf6
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...Sb6
- 2.Sc7#
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rc1
- Tries
- 1.Bb6?
- threat
- 2.Sc7#
- 1...Bxb6
- 2.Sb4#
- 1...Bd3
- 2.Rd4#
- 1...Rd3!
- threat
- 1.Rc2?
- threat
- 2.Rxf5#
- 2.Qf3#
- 2.Qg2#
- 1...Rxg1
- 2.Qd3#
- 1...Sxf6
- 2.Sf4#
- 1...Re1
- 2.Rxf5#
- 2.Qd3#
- 1...Rf1
- 2.Qd3#
- 1...Rd2
- 2.Rxf5#
- 2.Qf3#
- 1...Rd3
- 2.Rxf5#
- 2.Qxd3#
- 1...Rd4
- 2.Rxf5#
- 1...Bc3
- 2.Sc7#
- 1...Sg3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 2.Rxf5#
- 2.Qf3#
- 1...Sg7
- 2.Sf4#
- 2.Qf3#
- 2.Qg2#
- 1...Se7
- 2.Sxe7#
- 2.Qf3#
- 2.Qg2#
- 1...f4
- 2.Rf5#
- 2.Qf3#
- 1...Bxc2!
- threat
- 1.Ra4?
- threat
- 2.Qxb5#
- 1...Sxf6
- 2.Sf4#
- 1...Rc1
- 2.Rd4#
- 1...Rd3
- 2.Rxf5#
- 1...Rd4
- 2.Rxd4#
- 1...Bd3
- 2.Rd4#
- 1...Bb4
- 2.Sxb4#
- 2.Sc7#
- 1...Bb6
- 2.Sb4#
- 1...Sa7
- 2.Se7#
- 1...b4
- 2.Rxa5#
- 1...bxa4!
- threat
- 1.Rb4?
- threat
- 2.Rxb5#
- 2.Qxb5#
- 1...Rxg1
- 2.Qxb5#
- 1...Bxb4
- 2.Sxb4#
- 2.Sc7#
- 1...Sxf6
- 2.Sf4#
- 2.Rxb5#
- 1...Rc1
- 2.Rd4#
- 1...Rd3
- 2.Rxf5#
- 1...Rd4
- 2.Rxd4#
- 2.Rxb5#
- 1...Bd3
- 2.Rd4#
- 1...Sa7
- 2.Se7#
- 1...Bb6!
- threat
- 1.Rf4?
- threat
- 2.Qxb5#
- 1...Sxf4
- 2.Sxf4#
- 1...Rc1
- 2.Rd4#
- 1...Rd3
- 2.R6xf5#
- 1...Bd3
- 2.Rd4#
- 1...Bb4
- 2.Sxb4#
- 2.Sc7#
- 1...Bb6
- 2.Sb4#
- 1...Sa7
- 2.Se7#
- 1...b4
- 2.Qc4#
- 2.Qb5#
- 1...Sxf6!
- threat
- 1.Rh4?
- threat
- 2.Qxb5#
- 1...Sxf6
- 2.Sf4#
- 1...Rc1
- 2.Rd4#
- 1...Rd3
- 2.Rxf5#
- 1...Bd3
- 2.Rd4#
- 1...Bb4
- 2.Sxb4#
- 2.Sc7#
- 1...Bb6
- 2.Sb4#
- 1...Sf4
- 2.Sxf4#
- 1...Sa7
- 2.Se7#
- 1...b4
- 2.Qc4#
- 2.Qb5#
- 1...f4!
- threat
- 1.Rxc8?
- threat
- 2.Se7#
- 1...Be4
- 2.Qxb5#
- 2.Qa2#
- 1...Bd8
- 2.Sb4#
- 1...Rxg1!
- threat
- 1.Rxd6+?
- 1...Kxd6
- 2.Qe5#
- 1...Sxd6+!
- 1...Kxd6
- 1.Qxd1+?
- 1...Bd3
- 2.Rd4#
- 2.Qxd3#
- 1...Bd2
- 2.Rd4#
- 1...Kxc4!
- 1...Bd3
- 1.Qd3+?
- 1...Bxd3
- 2.Rd4#
- 1...Rxd3!
- 1...Bxd3
- 1.Bb6?
- Keys
- 1.Re4!
- threat
- 2.Rxf5#
- 1...Bxe4
- 2.Qxb5#
- 2.Qa2#
- 1...Sxf6
- 2.Sf4#
- 1...fxe4
- 2.Qxb5#
- 1...Rf1
- 2.Rd4#
- 1...Bc3
- 2.Sc7#
- 1...Sg3
- 2.Sf4#
- 1...Sg7
- 2.Sf4#
- 1...Se7
- 2.Sxe7#
- 1...f4
- 2.Rf5#
- threat
- 1.Re4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- R(b);N_GUARD::R1(C)
- R(b);N_GUARD::R1(C),XR(b)
- B(a);N_GUARD::R(E),XP(f)
- B(a);S_CUTR(b)::R1(C)
- B(c);N_GUARD::S(D)
- S(g);N_GUARD::S(F)
- S(g);N_GUARD::S(F),XS(g)
- S(g);N_GUARD,XR(E)::S(F)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- Tries
- Try
- B(A);
- Threat
- S(D)
- Vars
- B(c);N_GUARD,XB(A)::S(D)
- B(a);S_CUTR(b)::R1(C)
- Refutation
- R(b);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD,XB(A)::QAR2(B)
- S(g);N_GUARD,XR(E)::S(F)
- R(b);N_GUARD::QAR2(B)
- R(b);::R(E),XP(f)
- B(c);N_GUARD::S(D)
- S(g);N_GUARD::S(F)
- Refutation
- B(a);XR(C)
- Try
- R(C);
- Threat
- QAR2(B),XP(d)
- Vars
- S(g);N_GUARD,XR(E)::S(F)
- R(b);N_GUARD::R1(C)
- R(b);S_CUTB(a)::R(E),XP(f)
- R(b);N_GUARD::R1(C),XR(b)
- B(a);S_CUTR(b)::R1(C)
- B(c);N_GUARD::S(D)
- S(j);N_GUARD::S(F)
- P(d);OGATEB::R(C),XB(c)
- Refutation
- P(d);XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(b);XB(A)::QAR2(B),XP(d)
- R(b);N_GUARD::R1(C)
- R(b);S_CUTB(a)::R(E),XP(f)
- B(a);S_CUTR(b)::R1(C)
- S(j);N_GUARD::S(F)
- Refutation
- B(c);
- Try
- R(C);
- Threat
- QAR2(B),XP(d)
- Vars
- S(g);XR(C)::S(F),XS(g)
- R(b);N_GUARD::R1(C)
- R(b);S_CUTB(a)::R(E),XP(f)
- B(a);S_CUTR(b)::R1(C)
- B(c);N_GUARD::S(D)
- S(j);N_GUARD::S(F)
- Refutation
- S(g);XR(E)
- Try
- R(C);
- Threat
- QAR2(B),XP(d)
- Vars
- S(g);N_GUARD,XR(E)::S(F)
- R(b);N_GUARD::R1(C)
- R(b);S_CUTB(a)::R(E),XP(f)
- B(a);S_CUTR(b)::R1(C)
- B(c);N_GUARD::S(D)
- S(g);N_GUARD::S(F),XS(g)
- S(j);N_GUARD::S(F)
- Refutation
- P(f);
- Try
- R(C);XS(j)
- Threat
- S(F)
- Vars
- B(c);N_GUARD::S(D)
- Refutation
- R(b);XB(A)
- Try
- R(E);CHECK,XP(h)
- Vars
- K(e);N_GUARD,P-FLIGHT,XR(E)::QAB1(B)
- Refutation
- S(j);CHECK,XR(E)
- Try
- Q(B);CHECK,XR(b)
- Vars
- B(c);P_SPINB(c)::R1(C)
- Refutation
- K(e);S_FLIGHT,XR(C)
- Try
- Q(B);CHECK
- Vars
- B(a);XQ(B)::R1(C)
- Refutation
- R(b);XQ(B)
- Try
- Actual
- R(C);
- Threat
- R(E),XP(f)
- Vars
- S(g);N_GUARD,XR(E)::S(F)
- P(f);SBLOCK,XR(C)::QAR2(B),XP(d)
- R(b);N_GUARD::R1(C)
- B(c);N_GUARD::S(D)
- S(g);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
- P(f);::R(E)
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