MESON Chess Problem Database
Problem Display
PID: 275719 (7q/nPN4R/KP1k1B2/Npp5/2P1R1b1/1pPB4/2PQP3/5r2 w - - 0 1)
Larsson, Lennart
Springaren, 1993
#2
14 + 8
SOLUTION
- SOUND
- Sets
- 1...Qxf6
- 2.Se8#
- 1...Qa8
- 2.Be5#
- 1...Qb8
- 2.Be5#
- 1...Qc8
- 2.Be5#
- 1...Qd8
- 2.Be5#
- 1...Qe8
- 2.Sxe8#
- 1...Qf8
- 2.Be5#
- 1...Qg8
- 2.Be5#
- 1...Ra1
- 2.Qf4#
- 1...Rb1
- 2.Qf4#
- 1...Rc1
- 2.Qf4#
- 1...Rd1
- 2.Qf4#
- 1...Re1
- 2.Qf4#
- 1...Rg1
- 2.Qf4#
- 1...Rh1
- 2.Qf4#
- 1...Rf4
- 2.Qxf4#
- 1...Rf5
- 2.Re6#
- 1...Bxe2
- 2.Bxe2#
- 2.Re6#
- 1...Bf3
- 2.Re6#
- 2.Qf4#
- 1...Bh5
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Bd7
- 2.Be7#
- 1...Sc6
- 2.Sxb5#
- 1...Sc8
- 2.Sxb5#
- 1...bxc2
- 2.Bxc2#
- 1...bxc4
- 2.Bxc4#
- 1...Qxf6
- Tries
- 1.Bxh8?
- threat
- 2.Se8#
- 2.Be5#
- 1...bxc4
- 2.Bxc4#
- 2.Be5#
- 1...Rf5
- 2.Se8#
- 2.Re6#
- 1...Rf6
- 2.Se8#
- 1...Rf8
- 2.Be5#
- 1...Bh5
- 2.Be5#
- 2.Re6#
- 1...Bd7
- 2.Be5#
- 1...Sc6
- 2.Sxb5#
- 2.Se8#
- 1...Rf7!
- threat
- 1.Re3?
- threat
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 1...Qxf6
- 2.Se8#
- 1...Rxf6
- 2.Bf5#
- 2.Bg6#
- 1...Bxe2
- 2.Bxe2#
- 2.Re6#
- 1...Qg8
- 2.Be5#
- 1...Rf4
- 2.Be4#
- 1...Rf5
- 2.Bxf5#
- 2.Re6#
- 1...Bf3
- 2.Be4#
- 2.Re6#
- 1...Bf5
- 2.Be4#
- 2.Bxf5#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sxb5#
- 1...Rd1!
- threat
- 1.Re5?
- threat
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Rd5#
- 1...Qxf6
- 2.Rd5#
- 1...Rxf6
- 2.Rd5#
- 1...Bxe2
- 2.Bxe2#
- 2.Rd5#
- 2.Re6#
- 1...Rd1
- 2.Rd5#
- 1...Rf3
- 2.Rd5#
- 1...Rf4
- 2.Be4#
- 2.Rd5#
- 1...Rf5
- 2.Be4#
- 2.Bxf5#
- 2.Re6#
- 1...Bf3
- 2.Be4#
- 2.Re6#
- 1...Bf5
- 2.Be4#
- 2.Bxf5#
- 2.Rd5#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sxb5#
- 2.Rd5#
- 1...Qg8!
- threat
- 1.Ree7?
- threat
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 1...Qxf6
- 2.Se8#
- 1...Bxe2
- 2.Bxe2#
- 2.Re6#
- 2.Rd7#
- 1...Qg8
- 2.Be5#
- 1...Rd1
- 2.Qf4#
- 1...Rf4
- 2.Be4#
- 2.Qxf4#
- 1...Rf5
- 2.Bxf5#
- 2.Re6#
- 2.Rd7#
- 1...Bf3
- 2.Be4#
- 2.Re6#
- 2.Rd7#
- 2.Qf4#
- 1...Bf5
- 2.Be4#
- 2.Bxf5#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sxb5#
- 1...Rf3!
- threat
- 1.Rd7+?
- 1...Bxd7
- 2.Be7#
- 1...Kxd7!
- 1...Bxd7
- 1.Qg5?
- threat
- 2.Qd5#
- 2.Qe5#
- 1...Qxf6
- 2.Se8#
- 2.Qd5#
- 1...Qxh7
- 2.Qd5#
- 1...Qg7
- 2.Qd5#
- 1...Qg8
- 2.Be5#
- 2.Qe5#
- 1...Qe8
- 2.Sxe8#
- 2.Qd5#
- 1...Rf5
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 2.Qe5#
- 1...Sc6
- 2.Sxb5#
- 2.Qd5#
- 1...Bf5!
- threat
- 1.cxb3?
- threat
- 2.Bb1#
- 2.Bc2#
- 1...Qxf6
- 2.Se8#
- 1...Bxe2
- 2.Bxe2#
- 2.Re6#
- 1...Qg8
- 2.Be5#
- 1...Rb1
- 2.Bxb1#
- 2.Bc2#
- 2.Qf4#
- 1...Rd1
- 2.Qf4#
- 1...Rf5
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sxb5#
- 1...Rf3!
- threat
- 1.cxb5?
- threat
- 2.Sc4#
- 2.Bc4#
- 1...Qxf6
- 2.Sc4#
- 1...Qxh7
- 2.Bc4#
- 1...Bxe2
- 2.Sc4#
- 2.Bxe2#
- 2.Re6#
- 1...Sxb5
- 2.Bxb5#
- 1...Qg7
- 2.Bc4#
- 1...Qg8
- 2.Be5#
- 1...Ra1
- 2.Bc4#
- 2.Qf4#
- 1...Rd1
- 2.Sc4#
- 2.Qf4#
- 1...Rf3
- 2.Sc4#
- 1...Rf5
- 2.Sc4#
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sc4#
- 1...c4!
- threat
- 1.Bxh8?
- Keys
- 1.e3!
- threat
- 2.Bxf1#
- 2.Be2#
- 1...Qxf6
- 2.Se8#
- 1...Rxf6
- 2.Bf1#
- 2.Be2#
- 1...Qg8
- 2.Be5#
- 1...Ra1
- 2.Bf1#
- 2.Be2#
- 2.Qh2#
- 1...Rb1
- 2.Bf1#
- 2.Be2#
- 2.Qh2#
- 1...Rc1
- 2.Bf1#
- 2.Be2#
- 2.Qh2#
- 1...Rd1
- 2.Qh2#
- 1...Re1
- 2.Bf1#
- 2.Be2#
- 2.Qh2#
- 1...Rg1
- 2.Bf1#
- 2.Be2#
- 1...Rh1
- 2.Bf1#
- 2.Be2#
- 1...Rf2
- 2.Be2#
- 1...Rf3
- 2.Bf1#
- 2.Be2#
- 1...Rf4
- 2.Bf1#
- 2.Be2#
- 1...Rf5
- 2.Re6#
- 1...Be2
- 2.Bxe2#
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Sc6
- 2.Sxb5#
- threat
- 1.e3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 18
- Sets
- Q(h);N_GUARD,XB(K)::S(M)
- Q(h);N_GUARD::B(K)
- Q(h);N_GUARD,P_PINP(L)::B(K)
- Q(h);N_GUARD::S(M),XQ(h)
- R(a);N_GUARD,P_PINS(H)::QAB(B)
- R(a);N_GUARD::QAB(B)
- R(a);N_GUARD::QAB(B),XR(a)
- R(a);S_CUTB(c)::R1(G)
- B(c);N_GUARD::R1(G)
- B(c);N_GUARD::R1(G),XB(c)
- B(c);SBLOCK::B(K)
- S(g);N_GUARD::S(M),XP(d)
- P(b);OGATE,XP(A)::QAR(B)+B(E),XP(b)
- P(d);OGATE,XP(F)::QAR(B)+B(E),XP(d)
- Tries
- Try
- B(K);XQ(h)
- Threat
- DUALS(2)
- Vars
- R(a);::S(M)
- R(a);::B(K)
- B(c);::B(K)
- Refutation
- R(a);
- Try
- R(G);
- Threat
- DUALS(3)
- Vars
- Q(h);N_GUARD,XB(K)::S(M)
- Q(h);N_GUARD::B(K)
- R(a);::QAR(B)+B(E)
- B(c);N_GUARD::R1(G),XB(c)
- S(g);N_GUARD::S(M),XP(d)
- Refutation
- R(a);
- Try
- R(G);
- Threat
- DUALS(4)
- Vars
- Q(h);XB(K)::R1(G)
- R(a);XB(K)::R1(G)
- R(a);::R1(G)
- B(c);N_GUARD::R1(G),XB(c)
- Refutation
- Q(h);
- Try
- R(G);
- Threat
- DUALS(3)
- Vars
- Q(h);N_GUARD,XB(K)::S(M)
- Q(h);N_GUARD::B(K)
- R(a);N_GUARD::QAB(B)
- B(c);N_GUARD::R1(G),XB(c)
- S(g);N_GUARD::S(M),XP(d)
- Refutation
- R(a);
- Try
- R(N);CHECK
- Vars
- B(c);SBLOCK,XR(N)::B(K)
- Refutation
- K(f);P-FLIGHT,XR(N)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(h);XR(N)::QAR1(B)
- Q(h);::QAR1(B)
- R(a);S_CUTB(c)::R1(G)
- Refutation
- B(c);
- Try
- P(A);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,XB(K)::S(M)
- Q(h);N_GUARD::B(K)
- R(a);N_GUARD::QAB(B)
- R(a);S_CUTB(c)::R1(G)
- B(c);N_GUARD::R1(G),XB(c)
- S(g);N_GUARD::S(M),XP(d)
- Refutation
- R(a);
- Try
- P(F);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(h);XB(K)::S(H)
- Q(h);XR(N)::QAR(B)+B(E)
- S(g);OGATE,XP(F)::QAR(B)+B(E),XS(g)
- Q(h);::QAR(B)+B(E)
- Q(h);N_GUARD::B(K)
- R(a);::S(H)
- B(c);N_GUARD::R1(G),XB(c)
- S(g);::S(H)
- Refutation
- P(e);
- Try
- Actual
- P(C);
- Threat
- DUALS(2)
- Vars
- Q(h);N_GUARD,XB(K)::S(M)
- Q(h);N_GUARD::B(K)
- R(a);N_GUARD::QAB(B)
- R(a);::QAR(B)+B(E)
- R(a);S_CUTB(c)::R1(G)
- B(c);N_GUARD::R1(G),XB(c)
- S(g);N_GUARD::S(M),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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