MESON Chess Problem Database
Problem Display
PID: 81575 (2K1R3/2p4b/4B3/3pq1p1/Q2Nk3/5RB1/1N1Pp3/3r2b1 w - - 0 1)
Macleod, Norman Alasdair
Szachy, 1987
#2
9 + 9
| 6455 | The Chessboard Adventures of Norman Macleod | 1996 |
SOLUTION
- SOUND
- Sets
- 1...Qxg3
- 2.Bf5#
- 1...Qxd4
- 2.Bg4#
- 1...Qf4
- 2.Bf5#
- 1...Qd6
- 2.Bf5#
- 1...Qf6
- 2.Bf5#
- 1...Qg7
- 2.Bf5#
- 1...Qh8
- 2.Bf5#
- 1...Qf5
- 2.Bxf5#
- 1...Qxe6+
- 2.Rxe6#
- 1...Ra1
- 2.d3#
- 1...Rb1
- 2.d3#
- 1...Rc1
- 2.d3#
- 1...Re1
- 2.d3#
- 1...Rf1
- 2.d3#
- 1...Bh2
- 2.Re3#
- 1...Be3
- 2.Rxe3#
- 1...Bxd4
- 2.Re3#
- 1...Bf5
- 2.Bxf5#
- 1...Bg8
- 2.Bf5#
- 1...Qxg3
- Tries
- 1.Sd3?
- threat
- 2.Sc5#
- 1...Qxe6+
- 2.Rxe6#
- 1...Qxg3
- 2.Bf5#
- 1...Qxd4
- 2.Bg4#
- 1...Bxd4
- 2.Re3#
- 1...Qf4
- 2.Bf5#
- 1...Qd6
- 2.Bf5#
- 1...c5
- 2.Sxc5#
- 1...Rc1!
- threat
- 1.Bh3?
- threat
- 2.Rxe5#
- 1...Qe6+
- 2.Rxe6#
- 1...Bf5+
- 2.Bxf5#
- 1...Bxd4
- 2.Re3#
- 1...Qe7
- 2.Rxe7#
- 1...Qxe8+!
- threat
- 1.Bg4?
- threat
- 2.Rxe5#
- 1...Qe6+
- 2.Rxe6#
- 1...Bf5+
- 2.Bxf5#
- 1...Qe7
- 2.Rxe7#
- 1...Qxe8+!
- threat
- 1.Bd7?
- threat
- 2.Rxe5#
- 1...Bxd4
- 2.Re3#
- 1...Qe6
- 2.Rxe6#
- 1...Qe7
- 2.Rxe7#
- 1...Qxe8+!
- threat
- 1.Rf4+?
- 1...Qxf4
- 2.Bf5#
- 1...gxf4!
- 1...Qxf4
- 1.Qc4?
- threat
- 2.Bxd5#
- 2.Qd3#
- 1...Qxe6+
- 2.Rxe6#
- 1...Qxg3
- 2.Bxd5#
- 2.Bf5#
- 2.Qxd5#
- 1...Qxd4
- 2.Bg4#
- 2.Bxd5#
- 1...Rxd2
- 2.Bxd5#
- 1...Qf4
- 2.Bxd5#
- 2.Bf5#
- 2.Qxd5#
- 1...e1S
- 2.Bxd5#
- 1...Qf5
- 2.Bxf5#
- 2.Qd3#
- 1...Bf5
- 2.Bxf5#
- 2.Qd3#
- 1...Bg8
- 2.Bf5#
- 2.Qd3#
- 1...c6
- 2.Qd3#
- 1...dxc4!
- threat
- 1.Sd3?
- Keys
- 1.Rf5!
- threat
- 2.Rxe5#
- 1...Qxe6+
- 2.Rxe6#
- 1...Qxg3
- 2.Bxd5#
- 1...Qxd4
- 2.Bd7#
- 1...Qxf5
- 2.Bxf5#
- 1...Bxd4
- 2.Qc2#
- 1...Bxf5
- 2.Bxf5#
- 1...Qf4
- 2.Bxd5#
- 1...Qd6
- 2.Bxd5#
- 1...Qf6
- 2.Bxd5#
- 1...Qg7
- 2.Bxd5#
- 1...Qh8
- 2.Bxd5#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- Q(f);XB(D)::R(I)+B(G),DCHECK
- Q(f);OGATEB,P_SPINQ(f),XS(F)::R(I)+B(G)
- Q(f);::R(I)+B(G),DCHECK
- Q(f);P_PINR(I)::R(I)+B(G),DCHECK
- Q(f);P_PINB(G)::R(I)+B(G),DCHECK,XQ(f)
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(G)::R(I),XQ(f)
- R(a);N_GUARD::P(B)
- B(b);N_GUARD::R1(C)
- B(b);N_GUARD::R1(C),XB(b)
- B(b);N_GUARD,P_SPINB(b),XS(F)::R1(C)
- B(i);N_GUARD,P_PINB(G)::B(G),XB(i)
- B(i);N_GUARD::B(G)
- Tries
- Try
- S(A);
- Threat
- S(A)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(G)::R(I),XQ(f)
- Q(f);XB(D)::R(I)+B(G),DCHECK
- Q(f);OGATEB,P_SPINQ(f),XS(F)::R(I)+B(G)
- B(b);N_GUARD,P_SPINB(b),XS(F)::R1(C)
- Q(f);::R(I)+B(G),DCHECK
- P(h);::S(A),XP(h)
- Refutation
- R(a);
- Try
- B(G);P_PINQ(f)
- Threat
- R1(I),XQ(f)
- Vars
- Q(f);CHECK,OGATEB::R(I),XQ(f)
- B(i);CHECK,N_GUARD::B(G),XB(i)
- B(b);N_GUARD,P_SPINB(b),XS(F)::R1(C)
- Q(f);OGATEB::R(I),XQ(f)
- Refutation
- Q(f);CHECK,N_SPINQ(f),XR(I)
- Try
- B(G);P_PINQ(f)
- Threat
- R1(I),XQ(f)
- Vars
- Q(f);CHECK,OGATEB::R(I),XQ(f)
- B(i);CHECK,N_GUARD::B(G),XB(i)
- Q(f);OGATEB::R(I),XQ(f)
- Refutation
- Q(f);CHECK,N_SPINQ(f),XR(I)
- Try
- B(G);P_PINQ(f)
- Threat
- R1(I),XQ(f)
- Vars
- B(b);N_GUARD,P_SPINB(b),XS(F)::R1(C)
- Q(f);OGATEB,P_PINB(G)::R(I),XQ(f)
- Q(f);OGATEB::R(I),XQ(f)
- Refutation
- Q(f);CHECK,N_SPINQ(f),XR(I)
- Try
- R(C);CHECK
- Vars
- Q(f);XR(C)::R(I)+B(G),DCHECK
- Refutation
- P(g);XR(C)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(G)::R(I),XQ(f)
- R(a);XP(B)::B(G),XP(e)
- P(c);::B(G),XP(e)
- P(h);::QAB1(E)
- Refutation
- P(e);XQ(E)
- Try
- Actual
- R(C);
- Threat
- R1(C),XQ(f)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XB(G)::R(I),XQ(f)
- Q(f);XB(D)::R(I)+B(G),DCHECK,XP(e)
- Q(f);OGATEB,P_SPINQ(f),XS(F)::R(I)+B(G)
- Q(f);OGATE,P_PINB(G),XR(C)::R(I)+B(G),DCHECK,XQ(f)
- B(b);P_SPINB(b),SBLOCK,XS(F)::QAB(E)
- B(i);OGATE,P_PINB(G),XR(C)::B(G),XB(i)
- Q(f);::R(I)+B(G),DCHECK,XP(e)
- Q(f);P_PINR(I)::R(I)+B(G),DCHECK,XP(e)
Developed and maintained by Brian Stephenson.
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