MESON Chess Problem Database
Problem Display
PID: 274824 (5R1B/2n5/1N4K1/2P2p2/1R2N1p1/1p2k1Pp/Q1b1P3/3n1B2 w - - 0 1)
Forsberg, Rudolf
Springaren, 1992
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Qd2#
- 1...Bd3
- 2.Qd2#
- 1...Bxe4
- 2.Bd4#
- 1...Sb5
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...fxe4
- 2.Sc4#
- 1...Bb1
- Tries
- 1.Kxf5?
- threat
- 2.Sc4#
- 2.Bd4#
- 1...Bd3
- 2.Bd4#
- 2.Qd2#
- 1...Sb2
- 2.Bd4#
- 1...Sb5
- 2.Sc4#
- 2.Sd5#
- 1...Se6
- 2.Sc4#
- 2.Sd5#
- 1...Bxe4+!
- threat
- 1.Bb2?
- threat
- 2.Bc1#
- 1...Bxe4
- 2.Bd4#
- 1...Sxb2!
- threat
- 1.Bc3?
- threat
- 2.Bd2#
- 1...Bxe4
- 2.Bd4#
- 1...fxe4
- 2.Sc4#
- 1...Sxc3!
- threat
- 1.Re8?
- threat
- 2.Sc4#
- 2.Bd4#
- 1...Bxe4
- 2.Bd4#
- 1...Sxe8
- 2.Sd5#
- 1...Sb2
- 2.Bd4#
- 1...Bd3
- 2.Bd4#
- 2.Qd2#
- 1...Sb5
- 2.Sc4#
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...fxe4!
- threat
- 1.Qa1?
- threat
- 2.Qd4#
- 2.Qc1#
- 1...Bxe4
- 2.Qd4#
- 1...Sb2
- 2.Qc1#
- 1...Bb1
- 2.Qd4#
- 1...Sc3
- 2.Qc1#
- 1...Sb5
- 2.Sd5#
- 2.Qc1#
- 1...Se6
- 2.Sd5#
- 2.Qc1#
- 1...b2!
- threat
- 1.Qb2?
- threat
- 2.Qc1#
- 2.Qd4#
- 1...Bxe4
- 2.Bd4#
- 2.Qd4#
- 1...Sc3
- 2.Qc1#
- 1...Sb5
- 2.Sd5#
- 2.Qc1#
- 1...Se6
- 2.Sd5#
- 2.Qc1#
- 1...Sxb2!
- threat
- 1.Qxc2?
- threat
- 2.Sc4#
- 2.Bd4#
- 2.Qd3#
- 2.Qc1#
- 2.Qd2#
- 1...fxe4
- 2.Sc4#
- 2.Bd4#
- 2.Rxe4#
- 2.Qc1#
- 1...Sb2
- 2.Bd4#
- 2.Qc1#
- 2.Qd2#
- 1...Sf2
- 2.Sc4#
- 2.Bd4#
- 2.Qc1#
- 2.Qd2#
- 1...Sb5
- 2.Sc4#
- 2.Sd5#
- 2.Qd3#
- 2.Qc1#
- 2.Qd2#
- 1...Se6
- 2.Sc4#
- 2.Sd5#
- 2.Qd3#
- 2.Qc1#
- 2.Qd2#
- 1...b2
- 2.Sc4#
- 2.Bd4#
- 2.Qd3#
- 2.Qd2#
- 1...bxc2!
- threat
- 1.Qa8?
- threat
- 2.Sc4#
- 2.Bd4#
- 1...Sxa8
- 2.Sd5#
- 1...fxe4
- 2.Sc4#
- 1...Sb2
- 2.Bd4#
- 1...Bd3
- 2.Bd4#
- 1...Sb5
- 2.Sc4#
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Se6
- 2.Sc4#
- 2.Sd5#
- 1...Bxe4!
- threat
- 1.Kxf5?
- Keys
- 1.Be5!
- threat
- 2.Bf4#
- 1...Bxe4
- 2.Bd4#
- 1...fxe4
- 2.Sc4#
- 1...Sd5
- 2.Sxd5#
- 1...Se6
- 2.Sd5#
- 1...f4
- 2.Bxf4#
- threat
- 1.Be5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- B(b);OGATE::QAB1(B)
- B(b);SBLOCK,XS(F)::B(K)
- S(h);N_GUARD::S(H)
- S(h);N_GUARD::S(H),XS(h)
- P(g);SBLOCK,XS(F)::S(H)
- Tries
- Try
- K(I);P_SPINS(F),S_FLIGHT,XP(g)
- Threat
- DUALS(2)
- Vars
- S(a);::B(K)
- Refutation
- B(b);CHECK,XS(F)
- Try
- B(K);
- Threat
- B(K)
- Vars
- B(b);SBLOCK,XS(F)::B(K)
- Refutation
- S(a);XB(K)
- Try
- B(K);
- Threat
- B(K)
- Vars
- B(b);SBLOCK,XS(F)::B(K)
- P(g);SBLOCK,XS(F)::S(H)
- Refutation
- S(a);XB(K)
- Try
- R(J);
- Threat
- DUALS(2)
- Vars
- B(b);P_SPINB(b),XS(F)::B(K)
- S(h);N_GUARD,XR(J)::S(H)
- S(a);::B(K)
- S(h);N_GUARD::S(H)
- Refutation
- P(g);P_SPINP(g),XS(F)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(b);XS(F)::QAB1(B)
- S(a);::QAB(B)
- B(b);::QAB1(B)
- Refutation
- P(c);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(a);::QAB(B)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);XB(b)
- Threat
- DUALS(5)
- Refutation
- P(c);XQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(h);N_GUARD,XQ(B)::S(H)
- P(g);XS(F)::S(H)
- S(a);::B(K)
- B(b);::B(K)
- S(h);N_GUARD::S(H),XS(h)
- Refutation
- B(b);XS(F)
- Try
- Actual
- B(K);
- Threat
- B(K)
- Vars
- B(b);SBLOCK,XS(F)::B(K)
- P(g);SBLOCK,XS(F)::S(H)
- S(h);N_GUARD::S(H),XS(h)
- S(h);N_GUARD::S(H)
- P(g);P_PINS(F)::B(K),XP(g)
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).