MESON Chess Problem Database
Problem Display
PID: 15778 (4n2N/2p1r1n1/2p1r1BB/2N1k3/2P5/2P5/3RKR2/8 w - - 0 1)
Quack, Godfrey C
The Problemist, 1987
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxg6
- 2.Sxg6#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Sf5
- 2.Rxf5#
- 1...Sh5
- 2.Rf5#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Bf4#
- 1...Rxg6
- Tries
- 1.Kd1?
- 1...Rxg6
- 2.Sxg6#
- 1...Sf5
- 2.Rxf5#
- 1...Rf6
- 2.Rfe2#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Sh5
- 2.Rf5#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Bf4#
- 1...Rd6!
- 1...Rxg6
- 1.Kf1?
- 1...Rxg6
- 2.Sxg6#
- 1...Sf5
- 2.Rxf5#
- 1...Rd6
- 2.Rde2#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Sh5
- 2.Rf5#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Bf4#
- 1...Rf6!
- 1...Rxg6
- 1.Bxg7+?
- 1...Rf6
- 2.Rf5#
- 1...Rxg7
- 2.Rf5#
- 1...Sf6
- 2.Rf5#
- 1...Sxg7!
- 1...Rf6
- 1.Rd4?
- threat
- 2.Sd3#
- 1...Rxg6
- 2.Sxg6#
- 1...Sf5
- 2.Rxf5#
- 1...Rd6
- 2.Re4#
- 1...Rf6!
- threat
- 1.Rf3?
- 1...Rxg6
- 2.Sxg6#
- 1...Sf5
- 2.Rxf5#
- 1...Rf6
- 2.Re3#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Sh5
- 2.Rf5#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Bf4#
- 1...Rd6!
- 1...Rxg6
- 1.Kd1?
- Keys
- 1.Ke1!
- 1...Rxg6
- 2.Sxg6#
- 1...Sf5
- 2.Rxf5#
- 1...Rd6
- 2.Rde2#
- 1...Rf6
- 2.Rfe2#
- 1...Rd7
- 2.Sxd7#
- 1...Rf7
- 2.Sxf7#
- 1...Sh5
- 2.Rf5#
- 1...Sd6
- 2.Sd3#
- 1...Sf6
- 2.Bf4#
- 1...Rxg6
- 1.Ke1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);XB(G)::S(I),XR(c)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(I),XR(e)
- S(f);N_GUARD::R1(C),XS(f)
- S(f);N_GUARD::R1(C)
- S(g);SBLOCK::S(F)
- S(g);SBLOCK::B(H)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- R(c);XB(G)::S(I),XR(c)
- S(f);N_GUARD::R1(C),XS(f)
- R(c);SBLOCK::R(C)
- R(e);N_GUARD,P_PINR(A)::S(F),XR(e)
- R(e);N_GUARD::S(I),XR(e)
- S(f);N_GUARD::R1(C)
- S(g);SBLOCK::S(F)
- S(g);SBLOCK::B(H)
- Refutation
- R(c);P_PINR(A)
- Try
- K(B);S_FLIGHT
- Vars
- R(c);XB(G)::S(I),XR(c)
- S(f);N_GUARD::R1(C),XS(f)
- R(c);SBLOCK::R(A)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD,P_PINR(C)::S(I),XR(e)
- S(f);N_GUARD::R1(C)
- S(g);SBLOCK::S(F)
- S(g);SBLOCK::B(H)
- Refutation
- R(c);P_PINR(C)
- Try
- B(H);CHECK,XS(f)
- Vars
- R(c);P_SPINR(c)::R1(C)
- R(e);XB(H)::R1(C)
- S(g);P_SPINS(g)::R1(C)
- Refutation
- S(g);XB(H)
- Try
- R(A);
- Threat
- S(F)
- Vars
- R(c);XB(G)::S(I),XR(c)
- S(f);N_GUARD::R1(C),XS(f)
- R(c);SBLOCK::R1(A)
- Refutation
- R(c);
- Try
- R(C);
- Vars
- R(c);XB(G)::S(I),XR(c)
- S(f);N_GUARD::R1(C),XS(f)
- R(c);SBLOCK::R(C)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(I),XR(e)
- S(f);N_GUARD::R1(C)
- S(g);SBLOCK::S(F)
- S(g);SBLOCK::B(H)
- Refutation
- R(c);
- Try
- Actual
- K(B);P-FLIGHT
- Vars
- R(c);XB(G)::S(I),XR(c)
- S(f);N_GUARD::R1(C),XS(f)
- R(c);SBLOCK::R(A)
- R(c);SBLOCK::R(C)
- R(e);N_GUARD::S(F),XR(e)
- R(e);N_GUARD::S(I),XR(e)
- S(f);N_GUARD::R1(C)
- S(g);SBLOCK::S(F)
- S(g);SBLOCK::B(H)
Developed and maintained by Brian Stephenson.
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