MESON Chess Problem Database
Problem Display
PID: 138593 (2n5/4r3/7R/r2kP3/3P4/6pB/1B4K1/1QR5 w - - 0 1)
Groeneveld, Cornelis
2nd Comm., BCF 116. Ty., 1967-1968
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rc5#
- 1...Ra2
- 2.Rc5#
- 1...Ra3
- 2.Rc5#
- 1...Ra4
- 2.Rc5#
- 1...Rc5
- 2.Rxc5#
- 1...Ra6
- 2.Rc5#
- 1...Raa7
- 2.Rc5#
- 1...Ra8
- 2.Rc5#
- 1...Re6
- 2.Bxe6#
- 1...Rea7
- 2.Be6#
- 1...Rb7
- 2.Be6#
- 1...Rc7
- 2.Be6#
- 1...Rd7
- 2.Be6#
- 1...Rf7
- 2.Be6#
- 1...Rg7
- 2.Be6#
- 1...Rh7
- 2.Be6#
- 1...Sb6
- 2.Rd6#
- 1...Sd6
- 2.Rxd6#
- 1...Sa7
- 2.Rd6#
- 1...Ra1
- Tries
- 1.Kg1?
- threat
- 2.Bg2#
- 1...Ra3
- 2.Rc5#
- 1...Rf7
- 2.Be6#
- 1...Sd6
- 2.Rxd6#
- 1...g2
- 2.Bxg2#
- 1...Rxe5!
- threat
- 1.Kh1?
- threat
- 2.Bg2#
- 1...g2+
- 2.Bxg2#
- 1...Ra3
- 2.Rc5#
- 1...Rf7
- 2.Be6#
- 1...Sd6
- 2.Rxd6#
- 1...Rxe5!
- threat
- 1.Bg4?
- threat
- 2.Bf3#
- 1...Ra3
- 2.Rc5#
- 1...Rf7
- 2.Be6#
- 1...Sd6
- 2.Rxd6#
- 1...Rxe5!
- threat
- 1.Bf5?
- threat
- 2.Be4#
- 2.Qe4#
- 1...Sd6
- 2.Rxd6#
- 1...Rxe5!
- threat
- 1.Bd7?
- threat
- 2.Bc6#
- 1...Rc5
- 2.Rxc5#
- 1...Ra6
- 2.Rc5#
- 1...Re6
- 2.Bxe6#
- 1...Sa7
- 2.Rd6#
- 1...Rxd7!
- threat
- 1.Bxc8?
- threat
- 2.Rd6#
- 1...Rxe5
- 2.Bb7#
- 1...Ra6
- 2.Rc5#
- 1...Re6
- 2.Bxe6#
- 1...Rd7!
- threat
- 1.Qf5?
- threat
- 2.Qf3#
- 1...Rxe5
- 2.Qxe5#
- 1...Ra3
- 2.Rc5#
- 1...Sd6
- 2.Rxd6#
- 1...Rf7!
- threat
- 1.Kg1?
- Keys
- 1.Qd3!
- threat
- 2.Qf3#
- 1...Rxe5
- 2.dxe5#
- 1...Ra3
- 2.Rc5#
- 1...Rf7
- 2.Be6#
- 1...Sd6
- 2.Rxd6#
- threat
- 1.Qd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- R(b);N_GUARD::R1(B)
- R(b);N_GUARD,P_PINB(C)::R1(B)
- R(b);N_GUARD::R1(B),XR(b)
- R(d);N_GUARD::B(E),XR(d)
- R(d);N_GUARD::B(E)
- S(e);N_GUARD::R1(H)
- S(e);N_GUARD::R1(H),XS(e)
- Tries
- Try
- K(D);P-FLIGHT
- Threat
- B(E)
- Vars
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E)
- S(e);N_GUARD::R1(H),XS(e)
- P(a);::B(E),XP(a)
- Refutation
- R(d);XP(G)
- Try
- K(D);S_FLIGHT
- Threat
- B(E)
- Vars
- P(a);CHECK::B(E),XP(a)
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- R(d);XP(G)
- Try
- B(E);
- Threat
- B(E)
- Vars
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- R(d);XP(G)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- R(d);XP(G)
- Try
- B(E);
- Threat
- B(E)
- Vars
- R(b);N_GUARD::R1(B),XR(b)
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E),XR(d)
- S(e);N_GUARD::R1(H)
- Refutation
- R(d);XB(E)
- Try
- B(E);XS(e)
- Threat
- R1(H)
- Vars
- R(d);N_GUARD,XP(G)::B(E)
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E),XR(d)
- Refutation
- R(d);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- R(d);OGATE,P_SPINR(d),XP(G)::QAR1(A),XR(d)
- R(b);N_GUARD::R1(B)
- S(e);N_GUARD::R1(H),XS(e)
- Refutation
- R(d);
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- R(d);OGATE,XP(G)::QAR(A)+P(F),XR(d)
- R(b);N_GUARD::R1(B)
- R(d);N_GUARD::B(E)
- S(e);N_GUARD::R1(H),XS(e)
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