MESON Chess Problem Database
Problem Display
PID: 63259 (1bRBB1K1/8/1r1k2np/2pP2p1/5P2/N1NbR3/4r3/7Q w - - 0 1)
Boyer, Jean-Pierre
Laurent, Marcel
250 Oeuvres Choises, 1986
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Re6#
- 1...Reb2
- 2.Re6#
- 1...Rc2
- 2.Re6#
- 1...Rd2
- 2.Re6#
- 1...Rf2
- 2.Re6#
- 1...Rg2
- 2.Re6#
- 1...Rh2
- 2.Re6#
- 1...Rb1
- 2.Rc6#
- 1...Rbb2
- 2.Rc6#
- 1...Rb3
- 2.Rc6#
- 1...Rb4
- 2.Rc6#
- 1...Rb5
- 2.Rc6#
- 1...Rc6
- 2.Rxc6#
- 1...Rb7
- 2.Rc6#
- 1...Bb1
- 2.Sc4#
- 1...Bc2
- 2.Sc4#
- 1...Bc4
- 2.Sxc4#
- 1...Be4
- 2.Sc4#
- 1...Bf5
- 2.Sc4#
- 1...Ba7
- 2.Bc7#
- 1...Bc7
- 2.Bxc7#
- 1...Sxf4
- 2.Be7#
- 1...Sh4
- 2.Be7#
- 1...Se5
- 2.fxe5#
- 1...Se7+
- 2.Bxe7#
- 1...Sf8
- 2.Be7#
- 1...Sh8
- 2.Be7#
- 1...Ra2
- Tries
- 1.Sab5+?
- 1...Rxb5
- 2.Rc6#
- 1...Bxb5!
- 1...Rxb5
- 1.Sxe2?
- threat
- 2.Re6#
- 1...Se7+
- 2.Bxe7#
- 1...Sxf4
- 2.Be7#
- 1...Bf5
- 2.Sc4#
- 1...Se5
- 2.fxe5#
- 1...Sf8
- 2.Be7#
- 1...Be4!
- threat
- 1.Scb5+?
- 1...Rxb5
- 2.Rc6#
- 1...Bxb5!
- 1...Rxb5
- 1.Bxb6?
- threat
- 2.Bxc5#
- 2.Rc6#
- 2.Rd8#
- 1...Rxe3
- 2.Bxc5#
- 1...Be4
- 2.Bxc5#
- 1...Se5
- 2.Bxc5#
- 1...Bb5
- 2.Saxb5#
- 2.Scxb5#
- 2.Bxc5#
- 1...Bf5
- 2.Sc4#
- 2.Sab5#
- 2.Scb5#
- 2.Bxc5#
- 2.Rc6#
- 1...Ba7
- 2.Bc7#
- 2.Rc6#
- 2.Rd8#
- 1...Bc7
- 2.Bxc7#
- 1...Sf8
- 2.Bxc5#
- 2.Rc6#
- 1...c4
- 2.Sab5#
- 2.Scb5#
- 2.Bc5#
- 2.Rc6#
- 2.Rd8#
- 1...Se7+!
- threat
- 1.Rxe2?
- threat
- 2.Re6#
- 1...Se7+
- 2.Bxe7#
- 1...Sxf4
- 2.Be7#
- 1...Be4
- 2.Sc4#
- 1...Bf5
- 2.Sc4#
- 1...Se5
- 2.fxe5#
- 1...Sf8
- 2.Be7#
- 1...Bxe2!
- threat
- 1.Qe4?
- threat
- 2.Qe6#
- 1...Se7+
- 2.Bxe7#
- 2.Qxe7#
- 1...Bxe4
- 2.Sc4#
- 1...Sxf4
- 2.Be7#
- 2.Qe5#
- 2.Qe7#
- 1...Se5
- 2.Qxe5#
- 2.fxe5#
- 1...Sf8
- 2.Be7#
- 2.Qe5#
- 2.Qe7#
- 1...Rxe3!
- threat
- 1.Qh3?
- threat
- 2.Qe6#
- 2.Qd7#
- 1...Se7+
- 2.Bxe7#
- 1...Rxe3
- 2.Qd7#
- 1...Sxf4
- 2.Be7#
- 2.Qd7#
- 1...Rb7
- 2.Rc6#
- 2.Qe6#
- 1...Bb5
- 2.Qe6#
- 1...Bf5
- 2.Sc4#
- 1...Se5
- 2.Qe6#
- 2.fxe5#
- 1...Sf8
- 2.Be7#
- 1...g4!
- threat
- 1.Qxh6?
- threat
- 2.Be7#
- 1...Rb7
- 2.Rc6#
- 1...Be4
- 2.Sc4#
- 1...Rxe3!
- threat
- 1.Sab5+?
- Keys
- 1.Qb1!
- threat
- 2.Qxb6#
- 1...Se7+
- 2.Bxe7#
- 1...Rxb1
- 2.Rc6#
- 1...Bxb1
- 2.Sc4#
- 1...Reb2
- 2.Re6#
- 1...Rbb2
- 2.Rc6#
- 1...Rb3
- 2.Rc6#
- 1...Rb4
- 2.Rc6#
- 1...Rb5
- 2.Rc6#
- 1...Ra6
- 2.Qxb8#
- 1...Rc6
- 2.Rxc6#
- 1...Rb7
- 2.Rc6#
- 1...Bb5
- 2.Qxg6#
- 1...Ba7
- 2.Bc7#
- 1...Bc7
- 2.Bxc7#
- 1...Se5
- 2.fxe5#
- threat
- 1.Qb1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- R(a);N_GUARD::R1(D)
- R(e);N_GUARD::R1(G)
- R(e);N_GUARD::R1(G),XR(e)
- B(b);N_GUARD::S(B)
- B(b);N_GUARD,P_PINP(F)::S(B),XB(b)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- S(g);N_GUARD,XP(E)::B(H)
- S(g);N_GUARD::B(H)
- S(g);OGATE::P(E),XS(g)
- S(g);CHECK,N_GUARD::B(H),XS(g)
- Tries
- Try
- S(B);CHECK
- Vars
- R(e);XS(B)::R1(G)
- Refutation
- B(b);XS(B)
- Try
- S(C);XR(a)
- Threat
- R1(D)
- Vars
- S(g);CHECK,N_GUARD::B(H),XS(g)
- S(g);N_GUARD,XP(E)::B(H)
- B(b);N_GUARD::S(B)
- S(g);OGATE::P(E),XS(g)
- S(g);N_GUARD::B(H)
- Refutation
- B(b);
- Try
- S(C);CHECK
- Vars
- R(e);XS(C)::R1(G)
- Refutation
- B(b);XS(C)
- Try
- B(H);XR(e)
- Threat
- DUALS(3)
- Vars
- R(a);XR(D)::B(H),XP(c)
- B(b);::B(H),XP(c)
- S(g);::B(H),XP(c)
- B(i);N_GUARD::B(H),XB(i)
- Refutation
- S(g);CHECK
- Try
- R(D);XR(a)
- Threat
- R1(D)
- Vars
- S(g);CHECK,N_GUARD::B(H),XS(g)
- S(g);N_GUARD,XP(E)::B(H)
- B(b);N_GUARD::S(B)
- S(g);OGATE::P(E),XS(g)
- S(g);N_GUARD::B(H)
- Refutation
- B(b);XR(D)
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- B(b);N_GUARD,XQ(A)::S(B)
- Refutation
- R(a);XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::B(H),XS(g)
- R(a);XR(D)::QAR1(A)
- B(b);::QAR1(A)
- B(b);N_GUARD::S(B)
- S(g);N_GUARD::B(H)
- Refutation
- P(d);
- Try
- Q(A);P_PINS(g),XP(h)
- Threat
- B(H)
- Vars
- R(e);N_GUARD::R1(G)
- B(b);N_GUARD::S(B)
- Refutation
- R(a);XR(D)
- Try
- Actual
- Q(A);
- Threat
- QAR2(A),XR(e)
- Vars
- S(g);CHECK,N_GUARD::B(H),XS(g)
- R(e);N_GUARD,XQ(A)::R1(G)
- B(b);N_GUARD,XQ(A)::S(B)
- R(a);N_GUARD::R1(D)
- R(e);N_GUARD::R1(G)
- R(e);OGATE::QAB(A),XB(i)
- R(e);N_GUARD::R1(G),XR(e)
- B(b);OGATE::QAR(A),XS(g)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- S(g);OGATE::P(E),XS(g)
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