MESON Chess Problem Database
Problem Display
PID: 135288 (2K2b2/4R1p1/R5Nn/2Q1Pkp1/4N3/3n1P2/2B4q/2Br4 w - - 0 1)
Forster, Klaus
Die Schwalbe, 2009
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Sxg3#
- 1...Qxe5
- 2.Sg3#
- 1...Qh1
- 2.Sg3#
- 1...Qxc2
- 2.Sg3#
- 1...Qd2
- 2.Sg3#
- 1...Qe2
- 2.Sg3#
- 1...Qh5
- 2.Sg3#
- 1...Bxe7
- 2.Sxe7#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sxc5
- 2.Sg3#
- 2.Sd6#
- 1...Sxe5
- 2.Sd2#
- 2.Sg3#
- 1...Sf7
- 2.Rxf7#
- 1...Qg3
- Tries
- 1.Kb7?
- threat
- 2.Qc8#
- 1...Qxe5
- 2.Sg3#
- 1...Qxc2
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 1...Sxe5
- 2.Sd2#
- 2.Sg3#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sxc5+!
- threat
- 1.Kb8?
- threat
- 2.Qc8#
- 1...Qxc2
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 1...Sxc5
- 2.Sg3#
- 2.Sd6#
- 1...Sxe5
- 2.Sd2#
- 2.Sg3#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Qxe5+!
- threat
- 1.Bxd3?
- threat
- 2.Sd2#
- 2.Sg3#
- 2.Sd6#
- 1...Qxe5
- 2.Sd2#
- 2.Sg3#
- 2.Rxe5#
- 2.Qxe5#
- 1...Bxe7
- 2.Sd2#
- 2.Sg3#
- 2.Sxe7#
- 1...Qg3
- 2.Sd2#
- 2.Sxg3#
- 2.Sd6#
- 1...Qf4
- 2.Sg3#
- 2.Sd6#
- 1...Qc2
- 2.Sg3#
- 2.Sd6#
- 1...Qd2
- 2.Sxd2#
- 2.Sg3#
- 2.Sd6#
- 1...Qe2
- 2.Sg3#
- 2.Sd6#
- 1...Qh4
- 2.Sg3#
- 2.Sd6#
- 1...Re1
- 2.Sg3#
- 2.Sd6#
- 1...Rd2
- 2.Sxd2#
- 2.Sg3#
- 2.Sd6#
- 1...g4
- 2.Sg3#
- 2.Sd6#
- 1...Rxd3!
- threat
- 1.Qc4?
- threat
- 2.Qe6#
- 1...Qxc2
- 2.Sg3#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 1...Qxe5!
- threat
- 1.Qb5?
- threat
- 2.Qd7#
- 1...Qxe5
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 1...Sxe5
- 2.Sd2#
- 2.Sg3#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 1...Qxc2+!
- threat
- 1.Qd5?
- threat
- 2.Qe6#
- 2.Qd7#
- 1...Qxe5
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sxe5
- 2.Sd2#
- 2.Sg3#
- 2.Qe6#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 1...Qxc2+!
- threat
- 1.Qc6?
- threat
- 2.Qd7#
- 2.Qe6#
- 1...Qxc2
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sxe5
- 2.Sg3#
- 2.Qe6#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 2.Qe6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 1...Qxe5!
- threat
- 1.Qc7?
- threat
- 2.Qd7#
- 1...Qxc2
- 2.Sg3#
- 1...Sxc1
- 2.Sg3#
- 2.Sd6#
- 1...Sxe5
- 2.Sg3#
- 1...Se1
- 2.Sg3#
- 2.Sd6#
- 1...Sb2
- 2.Sg3#
- 2.Sd6#
- 1...Sf2
- 2.Sg3#
- 2.Sd6#
- 1...Sb4
- 2.Sg3#
- 2.Sd6#
- 1...Sf4
- 2.Sg3#
- 2.Sd6#
- 1...Sc5
- 2.Sg3#
- 2.Sd6#
- 1...Qxe5!
- threat
- 1.Kb7?
- Keys
- 1.Kd8!
- threat
- 2.Qc8#
- 1...Bxe7+
- 2.Sxe7#
- 1...Sxc1+
- 2.Sd6#
- 1...Se1+
- 2.Sd6#
- 1...Sb2+
- 2.Sd6#
- 1...Sf2+
- 2.Sd6#
- 1...Sb4+
- 2.Sd6#
- 1...Sf4+
- 2.Sd6#
- 1...Sxc5+
- 2.Sd6#
- 1...Sxe5+
- 2.Sd2#
- 1...Sf7+
- 2.Rxf7#
- 1...Qxe5
- 2.Sg3#
- 1...Qxc2
- 2.Sg3#
- threat
- 1.Kd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 5
- Sets
- Q(b);N_GUARD::S(D),XQ(b)
- Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(D)
- Q(b);N_GUARD::S(D)
- Q(b);N_GUARD,P_PINQ(E),XB(B)::S(D)
- B(h);XR(I)::S(H),XB(h)
- S(f);N_GUARD::R(I),XS(f)
- Tries
- Try
- K(J);S_FLIGHT
- Threat
- QAB(E)
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(D)
- Q(b);N_GUARD,XB(B)::S(D)
- Refutation
- S(c);CHECK,XQ(E)
- Try
- K(J);P-FLIGHT,P_SPINP(F)
- Threat
- QAB(E)
- Vars
- Q(b);N_GUARD,N_PINP(F),XB(B)::S(D)
- Refutation
- Q(b);CHECK,P_SPINQ(b),XP(F)
- Try
- B(B);XS(c)
- Threat
- DUALS(3)
- Refutation
- R(a);XB(B)
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- Q(b);N_GUARD,P_PINQ(E),XB(B)::S(D)
- Refutation
- Q(b);XP(F)
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(D)
- Refutation
- Q(b);CHECK,XB(B)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(D)
- Refutation
- Q(b);CHECK,XB(B)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,P_PINQ(E),XB(B)::S(D)
- Refutation
- Q(b);XP(F)
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- Q(b);N_GUARD,P_PINQ(E),XB(B)::S(D)
- S(c);XP(F)::B(B)+S(D),DCHECK
- Refutation
- Q(b);XP(F)
- Try
- Actual
- K(J);P-FLIGHT
- Threat
- QAB(E)
- Vars
- B(h);CHECK,XR(I)::S(H),XB(h)
- S(c);CHECK,XB(A)::B(B)+S(D),DCHECK
- S(c);CHECK::B(B)+S(D),DCHECK
- S(c);CHECK,XQ(E)::B(B)+S(D),DCHECK
- S(c);CHECK,P_SPINS(c),XP(F)::B(B)+S(D)
- S(f);CHECK,N_GUARD::R(I),XS(f)
- Q(b);N_GUARD,P_SPINQ(b),XP(F)::S(D)
- Q(b);N_GUARD,XB(B)::S(D)
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).