MESON Chess Problem Database
Problem Display
PID: 272432 (7Q/2Nr4/4p2N/4P2B/3Pk3/5RPK/3n4/6B1 w - - 0 1)
ten Cate, Pieter
The Problemist, 1957
#2
10 + 4
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Re3#
- 1...Rd5
- 2.Qh7#
- 1...Rd6
- 2.Qh7#
- 1...Re7
- 2.Qa8#
- 1...Rf7
- 2.Qa8#
- 1...Rg7
- 2.Qa8#
- 1...Rh7
- 2.Qxh7#
- 2.Qa8#
- 1...Rd8
- 2.Qh7#
- 1...Sxf3
- 2.Bg6#
- 1...Rxd4
- Tries
- 1.Kg2?
- threat
- 2.Bg6#
- 1...Rf7
- 2.Qa8#
- 1...Rg7
- 2.Qa8#
- 1...Rxc7!
- threat
- 1.Sf7?
- threat
- 2.Sg5#
- 2.Qh7#
- 1...Rxf7
- 2.Qa8#
- 1...Sxf3
- 2.Bg6#
- 2.Qh7#
- 1...Rxc7!
- threat
- 1.Rc3?
- threat
- 2.Bg6#
- 1...Rf7
- 2.Qa8#
- 1...Rg7
- 2.Qa8#
- 1...Rxc7!
- threat
- 1.Qf6?
- threat
- 2.Bg6#
- 2.Qh4#
- 2.Qf4#
- 2.Qg6#
- 1...Rxd4
- 2.Bg6#
- 2.Re3#
- 2.Qf4#
- 1...Sxf3
- 2.Bg6#
- 2.Qxf3#
- 2.Qg6#
- 1...Rf7
- 2.Bg6#
- 1...Rg7
- 2.Qf4#
- 1...Rxc7!
- threat
- 1.Qd8?
- threat
- 2.Qh4#
- 1...Rxd4
- 2.Re3#
- 2.Qxd4#
- 1...Rxc7
- 2.Re3#
- 1...Sxf3
- 2.Bg6#
- 1...Re7
- 2.Re3#
- 2.Qa8#
- 1...Rf7
- 2.Re3#
- 2.Qa8#
- 1...Rg7
- 2.Re3#
- 2.Qa8#
- 1...Rxd8!
- threat
- 1.Qe8?
- threat
- 2.Qg6#
- 1...Rxd4
- 2.Re3#
- 1...Rf7
- 2.Qc6#
- 2.Qa8#
- 1...Rg7
- 2.Qc6#
- 2.Qa8#
- 1...Rxc7!
- threat
- 1.Qf8?
- threat
- 2.Bg6#
- 2.Qf4#
- 1...Rxd4
- 2.Re3#
- 2.Qf4#
- 1...Sxf3
- 2.Bg6#
- 2.Qxf3#
- 1...Rf7
- 2.Qa8#
- 1...Rg7
- 2.Qf4#
- 2.Qa8#
- 1...Rxc7!
- threat
- 1.Qg8?
- threat
- 2.Qg4#
- 2.Qg6#
- 1...Rxd4
- 2.Re3#
- 1...Sxf3
- 2.Bg6#
- 2.Qg6#
- 1...Rf7
- 2.Qa8#
- 1...Rg7
- 2.Qa8#
- 1...Rxc7!
- threat
- 1.Kg2?
- Keys
- 1.Sg4!
- threat
- 2.Sf6#
- 1...Kxf3
- 2.Sf6#
- 1...Rxd4
- 2.Sf2#
- 1...Sxf3
- 2.Bg6#
- 1...Rf7
- 2.Qa8#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 5
- Sets
- R(d);SBLOCK,XP(E)::R1(B)
- R(d);N_GUARD::QAB(J)
- S(a);SBLOCK,XR(B)::B(G)
- Tries
- Try
- K(D);S_FLIGHT
- Threat
- B(G)
- Vars
- R(d);N_GUARD::QAB(J)
- R(d);N_GUARD,P_PINP(C)::QAB(J)
- Refutation
- R(d);XS(I)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD,XS(H)::QAB(J)
- Refutation
- R(d);XS(I)
- Try
- R(B);
- Threat
- B(G)
- Vars
- R(d);N_GUARD::QAB(J)
- Refutation
- R(d);XS(I)
- Try
- Q(J);
- Threat
- DUALS(4)
- Vars
- R(d);::B(G)
- R(d);::QAR1(J)
- Refutation
- R(d);XS(I)
- Try
- Q(J);
- Threat
- QAR(J)
- Vars
- R(d);XS(I)::R1(B)
- S(a);SBLOCK,XR(B)::B(G)
- Refutation
- R(d);XQ(J)
- Try
- Q(J);
- Threat
- QAB(J)
- Vars
- R(d);SBLOCK,XP(E)::R1(B)
- Refutation
- R(d);XS(I)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(d);N_GUARD::QAB(J)
- Refutation
- R(d);XS(I)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(d);SBLOCK,XP(E)::R1(B)
- R(d);N_GUARD::QAB(J)
- Refutation
- R(d);XS(I)
- Try
- Actual
- S(H);
- Threat
- S(H)
- Vars
- K(b);S_FLIGHT,XR(B)::B(G)+S(H)
- R(d);SBLOCK,XP(E)::S(H)
- S(a);SBLOCK,XR(B)::B(G)
- R(d);N_GUARD::QAB(J)
Developed and maintained by Brian Stephenson.
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