MESON Chess Problem Database
Problem Display
PID: 12203 (1Rb5/8/6p1/6Bk/q3Q1NP/1r2N1PK/r2R4/3B4 w - - 0 1)
Lender, Baruch
3rd HM., KeyStip 17. Ty., 1976
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Bxg4+
- 2.Bxg4#
- 1...Bf5
- 2.Rh8#
- 1...Ba6
- 2.Sf6#
- 2.Rh8#
- 1...Be6
- 2.Rh8#
- 1...Bb7
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 2.Rh8#
- 1...Bd7
- 2.Rh8#
- 1...Bxg4+
- Tries
- 1.Kh2?
- threat
- 2.Sf6#
- 1...Bxg4
- 2.Bxg4#
- 2.Rh8#
- 1...Rxd2+!
- threat
- 1.Sf5?
- threat
- 2.Sge3#
- 2.Sf6#
- 2.Sg7#
- 1...Rxg3+
- 2.Sxg3#
- 1...Qxe4
- 2.Sf6#
- 2.Sg7#
- 1...Rxd2
- 2.Sf6#
- 2.Sg7#
- 1...Rxb8
- 2.Sf6#
- 2.Sg7#
- 1...Bxf5
- 2.Rh8#
- 1...Qb5
- 2.Sf6#
- 2.Sg7#
- 1...Qd7
- 2.Sge3#
- 2.Sf6#
- 1...Qc4
- 2.Sf6#
- 2.Sg7#
- 1...Qd4
- 2.Sge3#
- 2.Sf6#
- 1...Qa6
- 2.Sf6#
- 2.Sg7#
- 1...Qa7
- 2.Sge3#
- 2.Sf6#
- 1...Ra1
- 2.Sf6#
- 2.Sg7#
- 1...Rb1
- 2.Sf6#
- 2.Sg7#
- 1...Rbb2
- 2.Sf6#
- 2.Sg7#
- 1...Rba3
- 2.Sf6#
- 2.Sg7#
- 1...Rc3
- 2.Sf6#
- 2.Sg7#
- 1...Rd3
- 2.Sf6#
- 2.Sg7#
- 1...Re3
- 2.Sf6#
- 2.Sg7#
- 1...Rf3
- 2.Sf6#
- 2.Sg7#
- 1...Rb4
- 2.Sf6#
- 2.Sg7#
- 1...Rb5
- 2.Sf6#
- 2.Sg7#
- 1...Rb6
- 2.Sf6#
- 2.Sg7#
- 1...Rb7
- 2.Sf6#
- 1...Ba6
- 2.Sf6#
- 2.Sg7#
- 2.Rh8#
- 1...gxf5!
- threat
- 1.Rd7?
- threat
- 2.Sf6#
- 2.Rh7#
- 1...Rh2+
- 2.Sxh2#
- 1...Bxd7
- 2.Rh8#
- 1...Qa7
- 2.Sf6#
- 1...Rb7
- 2.Sf6#
- 1...Qxd7!
- threat
- 1.Rxc8?
- threat
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 2.Rh8#
- 1...Qxe4
- 2.Sf6#
- 2.Rh8#
- 1...Rxd2
- 2.Sf6#
- 2.Rh8#
- 1...Rxe3
- 2.Sf6#
- 2.Rh8#
- 1...Qb5
- 2.Sf6#
- 2.Rh8#
- 1...Qe8
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 1...Qc4
- 2.Sf6#
- 2.Rh8#
- 1...Qd4
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 1...Qa6
- 2.Sf6#
- 2.Rh8#
- 1...Qa7
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 1...Qa8
- 2.Sf2#
- 2.Sh2#
- 2.Se5#
- 2.Sf6#
- 2.Sh6#
- 1...Ra1
- 2.Sf6#
- 2.Rh8#
- 1...Rb1
- 2.Sf6#
- 2.Rh8#
- 1...Rbb2
- 2.Sf6#
- 2.Rh8#
- 1...Rba3
- 2.Sf6#
- 2.Rh8#
- 1...Rc3
- 2.Sf6#
- 2.Rh8#
- 1...Rd3
- 2.Sf6#
- 2.Rh8#
- 1...Rb4
- 2.Sf6#
- 2.Rh8#
- 1...Rb5
- 2.Sf6#
- 2.Rh8#
- 1...Rb6
- 2.Sf6#
- 2.Rh8#
- 1...Rb7
- 2.Sf6#
- 1...Rb8
- 2.Sf6#
- 1...Qd7!
- threat
- 1.Qf5?
- threat
- 2.Sf6#
- 1...Qxg4+
- 2.Bxg4#
- 1...Bxf5
- 2.Rh8#
- 1...gxf5!
- threat
- 1.Kh2?
- Keys
- 1.Qe6!
- threat
- 2.Sf6#
- 1...Qxg4+
- 2.Bxg4#
- 1...Bxe6
- 2.Rh8#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- B(f);CHECK,OGATE,P_SPINB(f),XS(G)::B(A),XB(f)
- B(f);OGATE::R(J)
- Tries
- Try
- K(E);N_SPINS(G),P-FLIGHT,P_SPINR(B)
- Threat
- B(A)+S(G),DCHECK
- Refutation
- R(a);CHECK,XR(B)
- Try
- S(C);N_SPINS(G),P_SPINP(D)
- Threat
- DUALS(3)
- Vars
- R(b);CHECK,XP(D)::S(C),XR(b)
- B(f);OGATE,P_PINS(G),XS(C)::R(J)
- R(b);N_PINP(D)::B(A)+S(G),DCHECK
- Refutation
- P(e);XS(C)
- Try
- R(B);N_SPINS(G)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,N_GUARD::B(A)+S(G),XR(a)
- B(f);OGATE,P_PINS(G),XR(B)::R(J)
- Q(c);::B(A)+S(G),DCHECK
- R(b);::B(A)+S(G),DCHECK
- Refutation
- Q(c);P_PINS(G),XR(B)
- Try
- R(J);N_SPINS(G),XB(f)
- Threat
- DUALS(6)
- Vars
- R(b);::B(A)+S(G),DCHECK
- Refutation
- Q(c);P_PINS(G)
- Try
- Q(F);N_SPINS(G)
- Threat
- B(A)+S(G),DCHECK
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(G)::B(A),XQ(c)
- B(f);OGATE,P_PINS(G),XQ(F)::R(J)
- Refutation
- P(e);XQ(F)
- Try
- Actual
- Q(F);N_SPINS(G)
- Threat
- B(A)+S(G),DCHECK
- Vars
- Q(c);CHECK,OGATE,P_SPINQ(c),XS(G)::B(A),XQ(c)
- B(f);OGATE,P_PINS(G),XQ(F)::R(J)
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).