MESON Chess Problem Database
Problem Display
PID: 57778 (q2r1N2/1pr2p2/5R1b/3k1B2/1pRPN1Kp/1PPP4/Q6B/8 w - - 0 1)
Lynn, David P
Scacco!, 1995
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxc4
- 2.bxc4#
- 2.dxc4#
- 1...Rc5
- 2.Rxc5#
- 1...Rcd7
- 2.Rc5#
- 1...Re7
- 2.Rc5#
- 1...Rd6
- 2.Rxd6#
- 1...Rb8
- 2.Rd6#
- 1...Rc8
- 2.Rd6#
- 1...Re8
- 2.Rd6#
- 1...Rxf8
- 2.Rd6#
- 1...bxc3
- 2.Sxc3#
- 1...Rxc4
- Tries
- 1.Sd2?
- threat
- 2.Be4#
- 1...Re7
- 2.Rc5#
- 1...Re8
- 2.Rd6#
- 1...Qc8!
- threat
- 1.Sf2?
- threat
- 2.Be4#
- 1...Re7
- 2.Rc5#
- 1...Re8
- 2.Rd6#
- 1...Qc8!
- threat
- 1.Sg3?
- threat
- 2.Be4#
- 2.Qg2#
- 1...Qxa2
- 2.Be4#
- 1...Qc8
- 2.Qg2#
- 1...Re7
- 2.Rc5#
- 1...Bd2
- 2.Be4#
- 1...h3
- 2.Be4#
- 1...Re8!
- threat
- 1.Sc5?
- threat
- 2.Be4#
- 2.Qg2#
- 1...Qxa2
- 2.Be4#
- 1...Qc8
- 2.Qg2#
- 1...Re8
- 2.Rd6#
- 1...Bd2
- 2.Be4#
- 1...h3
- 2.Be4#
- 1...Re7!
- threat
- 1.Sd6?
- threat
- 2.Be4#
- 2.Qg2#
- 1...Qxa2
- 2.Be4#
- 1...Qc8
- 2.Qg2#
- 1...Re7
- 2.Rc5#
- 1...Bd2
- 2.Be4#
- 1...h3
- 2.Be4#
- 1...Re8!
- threat
- 1.Bd7?
- threat
- 2.Rf5#
- 2.Rd6#
- 1...Rcxd7
- 2.Rc5#
- 2.Rf5#
- 1...Rdxd7
- 2.Rf5#
- 1...Bxf8
- 2.Rf5#
- 1...Qa6
- 2.Rf5#
- 1...Rc6
- 2.Rf5#
- 1...Re8
- 2.Rd6#
- 1...Bg7
- 2.Rd6#
- 1...Bf4!
- threat
- 1.Rfc6?
- threat
- 2.Sf6#
- 2.R4c5#
- 1...Bxf8
- 2.Sf6#
- 1...bxc3
- 2.Sxc3#
- 2.Sf6#
- 1...Qa5
- 2.Sf6#
- 1...Qa7
- 2.Sf6#
- 1...Rd6
- 2.R4c5#
- 2.Rxd6#
- 1...Bg5
- 2.R4c5#
- 1...Bg7
- 2.R4c5#
- 1...b6
- 2.Sf6#
- 1...f6
- 2.Sxf6#
- 2.Be6#
- 2.R4c5#
- 1...Rxc6!
- threat
- 1.Re6?
- threat
- 2.Sf6#
- 2.Re5#
- 1...Rxc4
- 2.Sf6#
- 2.bxc4#
- 2.dxc4#
- 1...fxe6
- 2.Sf6#
- 2.Bxe6#
- 1...Rc5
- 2.Sf6#
- 2.Rxc5#
- 1...Re7
- 2.Sf6#
- 2.Rc5#
- 1...Re8
- 2.Sf6#
- 2.Rd6#
- 1...Bf4
- 2.Sf6#
- 1...Bg5
- 2.Re5#
- 1...f6
- 2.Sxf6#
- 1...Bg7!
- threat
- 1.Qg2?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Qa2
- 2.Sd2#
- 2.Sf2#
- 1...Rc5
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sxc5#
- 2.Sg5#
- 2.Sd6#
- 2.Rxc5#
- 1...Re7
- 2.Rc5#
- 1...Rd6
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sxd6#
- 2.Rxd6#
- 1...Re8
- 2.Rd6#
- 1...Bd2
- 2.Sxd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Bg5
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sc5#
- 2.Sxg5#
- 2.Sd6#
- 1...h3!
- threat
- 1.Sd2?
- Keys
- 1.Sg5!
- threat
- 2.Be4#
- 2.Qg2#
- 1...Qxa2
- 2.Be4#
- 1...Qc8
- 2.Qg2#
- 1...Re7
- 2.Rc5#
- 1...Re8
- 2.Rd6#
- 1...h3
- 2.Be4#
- threat
- 1.Sg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- R(f);N_GUARD::R1(F),XR(f)
- R(f);N_GUARD::R1(F)
- R(i);N_GUARD::R1(K),XR(i)
- R(i);N_GUARD::R1(K)
- R(i);N_GUARD,XS(L)::R1(K)
- P(a);XP(D)::S(H),XP(a)
- Tries
- Try
- S(H);
- Threat
- B(J)
- Vars
- R(f);N_GUARD::R1(F)
- R(i);N_GUARD::R1(K)
- Refutation
- Q(h);P_PINB(J)
- Try
- S(H);
- Threat
- B(J)
- Vars
- R(f);N_GUARD::R1(F)
- R(i);N_GUARD::R1(K)
- Refutation
- Q(h);P_PINB(J)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(h);XQ(A)::B(J)
- Q(h);P_PINB(J)::QAB(A)
- R(f);N_GUARD::R1(F)
- B(d);::B(J)
- P(b);::B(J)
- Refutation
- R(i);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(h);XQ(A)::B(J)
- Q(h);P_PINB(J)::QAB(A)
- R(i);N_GUARD::R1(K)
- B(d);::B(J)
- P(b);::B(J)
- Refutation
- R(f);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(h);XQ(A)::B(J)
- Q(h);P_PINB(J)::QAB(A)
- R(f);N_GUARD::R1(F)
- B(d);::B(J)
- P(b);::B(J)
- Refutation
- R(i);
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- R(i);XB(J)::R(K)
- B(d);XS(L)::R(K)
- Q(h);::R(K)
- R(f);::R(K)
- R(i);::R1(K)
- B(d);::R1(K)
- Refutation
- B(d);
- Try
- R(K);
- Threat
- DUALS(2)
- Vars
- B(d);XS(L)::S(H)
- Q(h);::S(H)
- B(d);::R1(F)
- P(e);::S(H)
- Refutation
- R(f);XR(K)
- Try
- R(K);
- Threat
- DUALS(2)
- Vars
- B(d);::S(H)
- B(d);::R1(K)
- P(g);::S(H),XP(g)
- Refutation
- B(d);
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- R(f);N_GUARD::R1(F)
- R(i);N_GUARD::R1(K)
- Refutation
- P(b);
- Try
- Actual
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(h);XQ(A)::B(J)
- Q(h);P_PINB(J)::QAB(A)
- R(f);N_GUARD::R1(F)
- R(i);N_GUARD::R1(K)
- P(b);::B(J)
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