MESON Chess Problem Database
Problem Display
PID: 49975 (3K3B/2pQ3R/8/2p4B/1bprN3/1PNk4/4R3/8 w - - 0 1)
Boudoin, Jean-Francois
Fulpius, Jaques
Schweizerische Schachzeitung, 2003
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Sf2#
- 2.Qxd5#
- 1...Rd6
- 2.Sf2#
- 1...Rxd7+
- 2.Rxd7#
- 1...Bxc3
- 2.Sf2#
- 2.Sxc5#
- 1...Rd5
- Tries
- 1.Kc8?
- threat
- 2.Qh3#
- 1...Rxd7
- 2.Sf2#
- 2.Rxd7#
- 1...cxb3!
- threat
- 1.Ke8?
- threat
- 2.Qh3#
- 1...Rxd7
- 2.Sf2#
- 2.Rxd7#
- 1...cxb3!
- threat
- 1.Sd1?
- threat
- 2.Sb2#
- 2.Sdf2#
- 2.Sef2#
- 1...Rxd7+
- 2.Rxd7#
- 1...cxb3
- 2.Sb2#
- 1...Be1
- 2.Sb2#
- 2.Sxc5#
- 1...Ba3
- 2.Sdf2#
- 2.Sef2#
- 1...Bc3
- 2.Sdf2#
- 2.Sef2#
- 2.Sxc5#
- 1...c3
- 2.Sdf2#
- 2.Sef2#
- 1...Bd2!
- threat
- 1.Sa4?
- threat
- 2.Sb2#
- 2.Sf2#
- 1...Rxd7+
- 2.Rxd7#
- 1...cxb3
- 2.Sb2#
- 1...Be1
- 2.Sb2#
- 2.Saxc5#
- 2.Sexc5#
- 1...Ba3
- 2.Sf2#
- 1...Bc3
- 2.Saxc5#
- 2.Sf2#
- 2.Sexc5#
- 1...c3
- 2.Sf2#
- 1...Bd2!
- threat
- 1.Sxc5+?
- 1...Kxc3
- 2.Bxd4#
- 2.Qxd4#
- 1...Bxc5!
- 1...Kxc3
- 1.Bg4?
- threat
- 2.Rh3#
- 1...Rxd7+
- 2.Rxd7#
- 1...cxb3!
- threat
- 1.Bg6?
- threat
- 2.Rh3#
- 1...Rxd7+
- 2.Rxd7#
- 1...Bxc3
- 2.Sg3#
- 1...cxb3!
- threat
- 1.Bf7?
- threat
- 2.Bxc4#
- 2.Rh3#
- 1...Bxc3
- 2.Bxc4#
- 1...cxb3
- 2.Rh3#
- 1...Rd5
- 2.Sf2#
- 2.Rh3#
- 2.Qxd5#
- 1...Rxd7+!
- threat
- 1.Bxd4?
- threat
- 2.Sf2#
- 2.Bg1#
- 2.Bf2#
- 2.Be3#
- 2.Bxc5#
- 2.Be5#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Rd2#
- 1...Bxc3
- 2.Sf2#
- 2.Sxc5#
- 2.Bxc3#
- 1...cxd4
- 2.Qh3#
- 1...cxb3!
- threat
- 1.Rf7?
- threat
- 2.Rf3#
- 1...Rxd7+
- 2.Rxd7#
- 1...Bxc3
- 2.Sf2#
- 2.Sxc5#
- 1...cxb3!
- threat
- 1.Rg7?
- threat
- 2.Rg3#
- 1...Rxd7+
- 2.Rxd7#
- 1...cxb3!
- threat
- 1.Kc8?
- Keys
- 1.Sd6!
- threat
- 2.Qh3#
- 1...Kxc3
- 2.Qh3#
- 1...Rxd6
- 2.Bg6#
- 1...Re4
- 2.Sdxe4#
- 1...Rf4
- 2.Sde4#
- 1...Rg4
- 2.Sde4#
- 1...Rh4
- 2.Sde4#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(d);::S(D)
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- Tries
- Try
- K(H);N_SPINQ(F),P-FLIGHT
- Threat
- QAR(F)
- Refutation
- P(c);XP(B)
- Try
- K(H);N_SPINQ(F),P-FLIGHT
- Threat
- QAR(F)
- Refutation
- P(c);XP(B)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- P(c);XP(B)::S(C)
- Refutation
- B(b);
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- P(c);XP(B)::S(C)
- B(b);::S(D)
- P(c);::S(D)
- Refutation
- B(b);
- Try
- S(D);CHECK,XP(e)
- Refutation
- B(b);XS(D)
- Try
- B(E);
- Threat
- R(G)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- Refutation
- P(c);XP(B)
- Try
- B(E);
- Threat
- R(G)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- B(b);SBLOCK,XS(C)::B(E)+S(D)
- Refutation
- P(c);XP(B)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(b);XS(C)::B(E),XP(c)
- P(c);XP(B)::R(G)
- Refutation
- R(d);CHECK,N_SPINR(d),XQ(F)
- Try
- B(I);N_SPINQ(F),XR(d)
- Threat
- DUALS(10)
- Vars
- P(e);P_SPINP(e),SBLOCK,XB(I)::QAR(F)
- Refutation
- P(c);XP(B)
- Try
- R(G);
- Threat
- R(G)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- Refutation
- P(c);XP(B)
- Try
- R(G);
- Threat
- R(G)
- Vars
- R(d);CHECK,N_SPINR(d),OGATE,XQ(F)::R(G),XR(d)
- Refutation
- P(c);XP(B)
- Try
- Actual
- S(D);N_PINR(d),N_SPINQ(F)
- Threat
- QAR(F)
- Vars
- K(a);P-FLIGHT,P_SPINR(d),XS(C)::QAR(F)
- R(d);N_GUARD,P_PINQ(F),P_SPINR(d),XS(D)::B(E)
- R(d);::QAR(F)+S(D),XR(d)
- R(d);::QAR(F)+S(D)
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