MESON Chess Problem Database
Problem Display
PID: 31788 (1N2b3/1Q1p1R2/3Pp1p1/1pK1kp2/1p3N2/3B4/2PB1R1r/6r1 w - - 0 1)
Martindale, Frank W
The Westminster Papers, 1875
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxg6#
- 1...Rb1
- 2.Sxg6#
- 1...Rc1
- 2.Sxg6#
- 1...Rd1
- 2.Sxg6#
- 1...Re1
- 2.Sxg6#
- 1...Rf1
- 2.Sxg6#
- 1...Rgh1
- 2.Sxg6#
- 1...Rhh1
- 2.Re2#
- 1...Rh4
- 2.Re2#
- 1...Rh5
- 2.Re2#
- 1...Rh6
- 2.Re2#
- 1...Rh7
- 2.Re2#
- 1...Rh8
- 2.Re2#
- 1...Bxf7
- 2.Sxd7#
- 1...b3
- 2.Bc3#
- 1...g5
- 2.Sg6#
- 1...Ra1
- Tries
- 1.Sg2?
- threat
- 2.Bf4#
- 2.Re2#
- 1...Rgxg2
- 2.Bf4#
- 1...Rhxg2
- 2.Bf4#
- 1...Bxf7
- 2.Sxd7#
- 1...Re1
- 2.Bf4#
- 1...Rh3
- 2.Bf4#
- 1...f4
- 2.Bxf4#
- 2.Re2#
- 2.Qe4#
- 1...g5
- 2.Re2#
- 1...Rh4!
- threat
- 1.Sxe6?
- threat
- 2.Qd5#
- 1...Kxe6
- 2.Qd5#
- 1...dxe6
- 2.Bf4#
- 1...Bxf7!
- threat
- 1.Bc1?
- threat
- 2.Bb2#
- 1...Rxc1
- 2.Sxg6#
- 1...Rxf2!
- threat
- 1.Bxf5?
- threat
- 2.Sd3#
- 2.Qe4#
- 1...exf5
- 2.Qd5#
- 1...gxf5
- 2.Sd3#
- 1...Re1
- 2.Sd3#
- 2.Sxg6#
- 1...Rg3
- 2.Qe4#
- 1...Rh3
- 2.Qe4#
- 1...Bxf7!
- threat
- 1.Qh1?
- 1...Rgxh1
- 2.Sxg6#
- 1...Rhxh1
- 2.Re2#
- 1...Rxf2
- 2.Qh8#
- 1...Bxf7
- 2.Sxd7#
- 1...Rg4
- 2.Qa1#
- 2.Qe1#
- 1...Ra1
- 2.Sxg6#
- 2.Qxa1#
- 1...Rb1
- 2.Sxg6#
- 1...Rc1
- 2.Sxg6#
- 1...Rd1
- 2.Sxg6#
- 1...Re1
- 2.Sxg6#
- 2.Qxe1#
- 1...Rf1
- 2.Sxg6#
- 1...Rgg2
- 2.Qa1#
- 2.Qe1#
- 1...Rg3
- 2.Qa1#
- 1...Rg5
- 2.Qa1#
- 2.Qe1#
- 1...Rhg2
- 2.Qh8#
- 1...Rh4
- 2.Re2#
- 1...Rh5
- 2.Re2#
- 1...Rh6
- 2.Re2#
- 1...Rh7
- 2.Re2#
- 1...Rh8
- 2.Re2#
- 2.Qxh8#
- 1...b3
- 2.Bc3#
- 1...g5
- 2.Sg6#
- 1...Rh3!
- 1...Rgxh1
- 1.Qf3?
- threat
- 2.Qe2#
- 2.Qe3#
- 1...Rxf2
- 2.Qe3#
- 1...Bxf7
- 2.Sxd7#
- 1...Re1
- 2.Sxg6#
- 1...Rh3
- 2.Re2#
- 1...Rg3!
- threat
- 1.Qxd7?
- threat
- 2.Sc6#
- 2.Qxe6#
- 1...Bxd7
- 2.Sxd7#
- 1...Bxf7!
- threat
- 1.Sg2?
- Keys
- 1.Sxg6+!
- 1...Rxg6
- 2.Bf4#
- 1...Rxg6
- 1.Sxg6+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- R(a);N_GUARD::S(E),XP(h)
- R(a);N_GUARD,P_PINP(A)::S(E),XP(h)
- R(b);N_GUARD::R(C)
- B(j);N_GUARD,XR(I)::S(J),XP(i)
- P(c);N_GUARD::B(B)
- P(h);S_CUTR(a)::S(E)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XS(E)::B(B)
- R(b);XS(E)::B(B)
- B(j);N_GUARD,XR(I)::S(J),XP(i)
- R(a);::B(B)
- R(b);::B(B)
- P(h);::R(C)
- Refutation
- R(b);
- Try
- S(E);XP(g)
- Threat
- QAR1(H)
- Vars
- K(e);P-FLIGHT,XS(E)::QAB1(H)
- P(i);SBLOCK,XS(E)::B(B)
- Refutation
- B(j);XR(I)
- Try
- B(B);
- Threat
- B(B)
- Vars
- R(a);N_GUARD,P_PINP(A),XB(B)::S(E),XP(h)
- Refutation
- R(b);XR(C)
- Try
- B(D);XP(f)
- Threat
- DUALS(2)
- Vars
- P(g);N_GUARD,XB(D)::QAR1(H)
- P(h);XB(D)::S(E)
- R(a);::QAR1(H)
- R(b);::QAR1(H)
- Refutation
- B(j);XR(I)
- Try
- Q(H);
- Vars
- R(a);N_GUARD,XQ(H)::S(E),XP(h)
- R(b);N_GUARD,XQ(H)::R(C)
- R(b);OGATE,XR(C)::QAB(H)
- B(j);N_GUARD,XR(I)::S(J),XP(i)
- R(a);N_GUARD::S(E),XP(h)
- R(a);N_GUARD,P_PINP(A)::S(E),XP(h)
- R(a);OGATE::QAB(H)
- R(b);OGATE::QAB(H)
- R(b);N_GUARD::R(C)
- P(c);N_GUARD::B(B)
- P(h);S_CUTR(a)::S(E)
- Refutation
- R(b);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(b);XR(C)::QAR2(H)
- B(j);N_GUARD,XR(I)::S(J),XP(i)
- R(a);N_GUARD::S(E),XP(h)
- R(b);N_GUARD::R(C)
- Refutation
- R(a);
- Try
- Q(H);XP(i)
- Threat
- DUALS(2)
- Vars
- B(j);XQ(H)::S(J),XB(j)
- Refutation
- B(j);XR(I)
- Try
- Actual
- S(E);CHECK,XP(h)
- Vars
- R(a);XS(E)::B(B)
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