MESON Chess Problem Database
Problem Display
PID: 202226 (3RK3/5R1p/3p2n1/4kBpN/2Q4p/3p1p2/3qrN2/5nr1 w - - 0 1)
Larsson, Lennart
Springaren, 1988
#2
7 + 12
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sxd3#
- 1...Qe1
- 2.Sxd3#
- 1...Qb4
- 2.Sxd3#
- 1...Qf4
- 2.Sxd3#
- 1...Qa5
- 2.Sxd3#
- 1...Qa2
- 2.Sxd3#
- 1...Qb2
- 2.Sxd3#
- 1...Rh1
- 2.Sg4#
- 1...Rg4
- 2.Sxg4#
- 1...Rxf2
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...Qc1
- Tries
- 1.Bxd3?
- threat
- 2.Rf5#
- 1...Qxd3
- 2.Sxd3#
- 1...d5
- 2.Qxd5#
- 1...Re4
- 2.Qxe4#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 1...Se7
- 2.Rxe7#
- 1...Qf4!
- threat
- 1.Bh3?
- threat
- 2.Rf5#
- 1...Qf4
- 2.Sxd3#
- 1...Rg4
- 2.Sxg4#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 1...Se7
- 2.Rxe7#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...g4!
- threat
- 1.Be4?
- threat
- 2.Rf5#
- 2.Qd5#
- 1...Rxe4
- 2.Qxe4#
- 1...d5
- 2.Qxd5#
- 1...Qf4
- 2.Sxd3#
- 2.Qd5#
- 1...Qa5
- 2.Sxd3#
- 2.Rf5#
- 1...Qa2
- 2.Sxd3#
- 2.Rf5#
- 1...Sg3
- 2.Sg4#
- 2.Qd5#
- 1...Sf4
- 2.Rf5#
- 1...Se7
- 2.Rxe7#
- 1...Se3!
- threat
- 1.Bg4?
- threat
- 2.Rf5#
- 1...Rxg4
- 2.Sxg4#
- 1...Qf4
- 2.Sxd3#
- 1...Se3
- 2.Qe4#
- 1...Se7
- 2.Rxe7#
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sg3!
- threat
- 1.Be6?
- threat
- 2.Rf5#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Qf4
- 2.Sxd3#
- 2.Qd5#
- 1...Qa5
- 2.Sxd3#
- 2.Rf5#
- 1...Qa2
- 2.Sxd3#
- 2.Rf5#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 2.Qd5#
- 1...Sf4
- 2.Rf5#
- 1...Se7!
- threat
- 1.Bxg6?
- threat
- 2.Rf5#
- 2.Re7#
- 1...d5
- 2.Re7#
- 2.Qxd5#
- 1...Qf4
- 2.Sxd3#
- 2.Re7#
- 1...Se3
- 2.Re7#
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 2.Re7#
- 1...hxg6!
- threat
- 1.Bd7?
- threat
- 2.Rf5#
- 1...Qf4
- 2.Sxd3#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 1...Se7
- 2.Rxe7#
- 1...d5!
- threat
- 1.Re7+?
- 1...Kxf5
- 2.Qf7#
- 1...Sxe7!
- 1...Kxf5
- 1.Rxd6?
- threat
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 2.Qc5#
- 1...Qc1
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 1...Qc3
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 1...Qe3
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 1...Qb4
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 1...Qf4
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Qa5
- 2.Re6#
- 2.Qe6#
- 2.Qd4#
- 1...Qa2
- 2.Rd5#
- 2.Re6#
- 2.Qd4#
- 1...Qb2
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Qc2
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 1...Rg4
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Re4
- 2.Rd5#
- 2.Re6#
- 2.Qd5#
- 2.Qe6#
- 2.Qc5#
- 1...Se3
- 2.Re6#
- 2.Qe6#
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 1...Se7
- 2.Re6#
- 2.Qe6#
- 2.Qd4#
- 1...Sf8
- 2.Rd5#
- 2.Qd5#
- 2.Qd4#
- 2.Qc5#
- 1...Kxd6+!
- threat
- 1.Qb5+?
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...Kd4+!
- 1...d5
- 1.Qc5+?
- 1...d5
- 2.Rxd5#
- 2.Qxd5#
- 1...dxc5!
- 1...d5
- 1.Bxd3?
- Keys
- 1.Bc8!
- threat
- 2.Rf5#
- 1...Qf4
- 2.Sxd3#
- 1...Se3
- 2.Qe4#
- 1...Sg3
- 2.Sg4#
- 1...Se7
- 2.Rxe7#
- threat
- 1.Bc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(c);N_GUARD::S(A),XP(e)
- R(b);N_GUARD::S(A)
- R(b);N_GUARD::S(A),XR(b)
- R(d);N_GUARD,XS(A)::QAR1(B)
- R(d);N_GUARD::QAR1(B),XR(d)
- S(a);S_CUTR(d)::QAR1(B)
- S(a);S_CUTR(b)::S(A)
- Tries
- Try
- B(C);XP(e)
- Threat
- R1(E)
- Vars
- Q(c);XB(C)::S(A),XQ(c)
- P(j);::QAR1(B),XP(j)
- R(d);N_GUARD::QAR1(B),XR(d)
- S(a);S_CUTR(d)::QAR1(B)
- S(a);S_CUTR(b)::S(A)
- S(k);N_GUARD::R(E),XS(k)
- Refutation
- Q(c);
- Try
- B(C);
- Threat
- R1(E)
- Vars
- Q(c);N_GUARD::S(A),XP(e)
- R(b);N_GUARD::S(A),XR(b)
- S(a);S_CUTR(d)::QAR1(B)
- S(a);S_CUTR(b)::S(A)
- S(k);N_GUARD::R(E),XS(k)
- Refutation
- P(i);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- R(d);OGATE,XB(C)::QAR1(B),XR(d)
- P(j);::QAR1(B),XP(j)
- S(k);::R1(E)
- S(k);N_GUARD::R(E),XS(k)
- Refutation
- S(a);
- Try
- B(C);
- Threat
- R1(E)
- Vars
- R(b);XB(C)::S(A),XR(b)
- Q(c);N_GUARD::S(A),XP(e)
- S(a);S_CUTR(d)::QAR1(B)
- S(k);N_GUARD::R(E),XS(k)
- Refutation
- S(a);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- P(j);::QAR1(B),XP(j)
- S(a);S_CUTR(d)::QAR1(B)
- S(k);::R1(E)
- Refutation
- S(k);
- Try
- B(C);XS(k)
- Threat
- DUALS(2)
- Refutation
- P(l);XB(C)
- Try
- B(C);
- Threat
- R1(E)
- Vars
- Q(c);N_GUARD::S(A),XP(e)
- S(a);S_CUTR(d)::QAR1(B)
- S(a);S_CUTR(b)::S(A)
- S(k);N_GUARD::R(E),XS(k)
- Refutation
- P(j);
- Try
- R(E);CHECK
- Vars
- K(h);P-FLIGHT,P_PINR(E),XB(C)::QAR2(B)
- Refutation
- S(k);XR(E)
- Try
- R(F);XP(j)
- Threat
- DUALS(6)
- Vars
- S(k);::QAB1(B)
- Refutation
- K(h);CHECK,S_FLIGHT,XR(F)
- Try
- Q(B);CHECK
- Refutation
- K(h);CHECK,P_SPINP(j),S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- P(j);XQ(B)
- Try
- Actual
- B(C);
- Threat
- R1(E)
- Vars
- Q(c);N_GUARD::S(A),XP(e)
- S(a);S_CUTR(d)::QAR1(B)
- S(a);S_CUTR(b)::S(A)
- S(k);N_GUARD::R(E),XS(k)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).