MESON Chess Problem Database
Problem Display
PID: 89174 (8/2pR3Q/B2r4/1NP3b1/2P1R1K1/1Npk1P2/1np5/1n6 w - - 0 1)
Shire, David J
The Problemist, 1975
#2
10 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rd4
- 2.Rdxd4#
- 1...Rd5
- 2.Rxd5#
- 1...Rxd7
- 2.Qxd7#
- 1...Sd2
- 2.Sc1#
- 1...Sxc4
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c6
- 2.Rxd6#
- 1...Rd4
- Tries
- 1.Sa3?
- threat
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Rxd7
- 2.Re7#
- 2.Qxd7#
- 1...Rd4
- 2.Rdxd4#
- 1...Be7
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Rexe7#
- 1...Sd2
- 2.Sc1#
- 1...Be3!
- threat
- 1.Sxd6?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Sxc4
- 2.Sxc4#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Bxc4#
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...cxd6
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 2.Rxd6#
- 1...c1Q
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1S
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1B
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1R
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Bf4
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Bf6
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Be7
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Rexe7#
- 1...Sd2
- 2.Sc1#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Be3!
- threat
- 1.Sa7?
- threat
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Rxd7
- 2.Re7#
- 2.Qxd7#
- 1...Rd4
- 2.Rdxd4#
- 1...Be7
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Rexe7#
- 1...Sd2
- 2.Sc1#
- 1...Be3!
- threat
- 1.Sxc7?
- threat
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 2.Rxd6#
- 1...Rxd7
- 2.Re7#
- 2.Qxd7#
- 1...c1Q
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1S
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1B
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...c1R
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Rd4
- 2.Rdxd4#
- 1...Rd5
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 2.Rxd5#
- 1...Bf4
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Bf6
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Ree7#
- 2.Re8#
- 1...Be7
- 2.Re1#
- 2.Re5#
- 2.Re6#
- 2.Rexe7#
- 1...Sd2
- 2.Sc1#
- 2.Rxd6#
- 1...Be3!
- threat
- 1.Sa3?
- Keys
- 1.S5d4!
- threat
- 2.Re6#
- 1...Rxd4
- 2.Rdxd4#
- 1...Rxa6
- 2.Sc6#
- 1...Rxd7
- 2.Re7#
- 1...Rd5
- 2.Re5#
- 1...Re6
- 2.Sxe6#
- 2.Rxe6#
- 1...Rf6
- 2.Se6#
- 1...Rg6
- 2.Se6#
- 1...Rh6
- 2.Se6#
- 1...Sd2
- 2.Sc1#
- threat
- 1.S5d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- R(g);OGATE,P_PINR(D)::R1(I),XR(g)
- R(g);OGATE::R(I),XR(g)
- R(g);N_SPINR(g),OGATE,XR(I)::QAR(J),XR(g)
- S(a);SBLOCK,S_CUTB(f)::S(A)
- P(h);N_GUARD::R(I),XR(g)
- Tries
- Try
- S(F);
- Threat
- DUALS(5)
- Vars
- R(g);OGATE,P_PINR(D)::R1(I),XR(g)
- S(a);SBLOCK,S_CUTB(f)::S(A)
- Refutation
- B(f);
- Try
- S(F);XR(g)
- Threat
- DUALS(11)
- Refutation
- B(f);
- Try
- S(F);
- Threat
- DUALS(5)
- Vars
- R(g);OGATE,P_PINR(D)::R1(I),XR(g)
- S(a);SBLOCK,S_CUTB(f)::S(A)
- Refutation
- B(f);
- Try
- S(F);XP(h)
- Threat
- DUALS(6)
- Vars
- R(g);OGATE,P_PINR(D)::R1(I),XR(g)
- Refutation
- B(f);
- Try
- Actual
- S(F);N_PINR(g)
- Threat
- QAB(J)+R(D)
- Vars
- R(g);OGATE,P_PINR(D),P_SPINR(g),XS(F)::R1(I),XR(g)
- R(g);XB(H)::R(I)+S(F)
- R(g);N_GUARD,XR(I)::QAB(J)+R(D)
- R(g);N_GUARD::QAB(J)+R(D)
- R(g);::R(I)+S(F)
- S(a);SBLOCK,S_CUTB(f)::S(A)
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