MESON Chess Problem Database
Problem Display
PID: 258544 (1Qq1b1Bk/n3PP2/3p4/2p3R1/2PN1Pp1/3pKPbN/7R/n3Br2 w - - 0 1)
Zickermann, Albert
Die Schwalbe, 1931
#2
13 + 11
SOLUTION
- SOUND
- Sets
- 1...Bxe1
- 2.Sf2#
- 1...Bf2+
- 2.Sxf2#
- 1...Bxf4+
- 2.Sxf4#
- 1...d5
- 2.Qe5#
- 1...Bxe1
- Tries
- 1.Sg1+?
- 1...Bh4
- 2.Rxh4#
- 1...Bxh2!
- 1...Bh4
- 1.Sf2+?
- 1...Bh4
- 2.Rxh4#
- 1...Bxh2!
- 1...Bh4
- 1.Qb2?
- threat
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Qe6+
- 2.Sxe6#
- 1...Rxe1+
- 2.Se2#
- 1...Rxf3+
- 2.Sxf3#
- 1...Bf2+
- 2.Sxf2#
- 1...Bxf4+
- 2.Sxf4#
- 1...Sc2+
- 2.Sxc2#
- 1...cxd4+
- 2.Qxd4#
- 1...Bxe1
- 2.Sf2#
- 1...Qf5
- 2.Sxf5#
- 1...Qb7
- 2.Sb3#
- 2.Sb5#
- 1...Qc6
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 1...Qb8
- 2.Sb3#
- 2.Sb5#
- 1...Rf2
- 2.Sc2#
- 2.Se2#
- 1...Bb5
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Bc6
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 1...Sb3
- 2.Sxb3#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sxc6#
- 1...d5!
- threat
- 1.Sg1+?
- Keys
- 1.Bc3!
- threat
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Qe6+
- 2.Sxe6#
- 1...Re1+
- 2.Se2#
- 1...Rxf3+
- 2.Sxf3#
- 1...Bf2+
- 2.Sxf2#
- 1...Bxf4+
- 2.Sxf4#
- 1...Sc2+
- 2.Sxc2#
- 1...cxd4+
- 2.Bxd4#
- 1...Qf5
- 2.Sxf5#
- 1...Qc6
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 1...Rc1
- 2.Sc2#
- 1...Be1
- 2.Sf2#
- 1...Bb5
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sxb5#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Bc6
- 2.Sc2#
- 2.Se2#
- 2.Sb3#
- 2.Sb5#
- 2.Sf5#
- 2.Sxc6#
- 2.Se6#
- 1...Sb3
- 2.Sxb3#
- 1...Sb5
- 2.Sxb5#
- 1...Sc6
- 2.Sxc6#
- 1...d5
- 2.Qe5#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD,XB(A)::R(B)+S(E)
- B(d);CHECK,N_GUARD::R(B)+S(E),XB(d)
- B(d);CHECK,XP(H)::R(B)+S(E),XB(d)
- P(g);OGATE::QAB(L)
- Tries
- Try
- S(E);CHECK
- Vars
- B(d);N_GUARD,P_SPINB(d)::R(B),XB(d)
- Refutation
- B(d);XR(B)
- Try
- S(E);CHECK
- Vars
- B(d);N_GUARD,P_SPINB(d)::R(B),XB(d)
- Refutation
- B(d);XR(B)
- Try
- Q(L);
- Threat
- DUALS(7)
- Vars
- Q(i);CHECK::QAB(L)+S(G),XQ(i)
- R(b);CHECK,XB(A)::QAB(L)+S(G)
- R(b);CHECK,XP(D)::QAB(L)+S(G),XR(b)
- B(d);CHECK,N_GUARD::R(B)+S(E),XB(d)
- B(d);CHECK,XP(H)::R(B)+S(E),XB(d)
- S(a);CHECK::QAB(L)+S(G),XS(a)
- P(f);CHECK,OGATE,P_SPINP(f),XS(G)::QAB(L),XP(f)
- B(d);N_GUARD,XB(A)::R(B)+S(E)
- Q(i);::QAB(L)+S(G),XQ(i)
- S(a);::QAB(L)+S(G),XS(a)
- S(h);::QAB(L)+S(G),XS(h)
- Refutation
- P(g);
- Try
- Actual
- B(A);
- Threat
- DUALS(7)
- Vars
- Q(i);CHECK::B(A)+S(G),XQ(i)
- R(b);CHECK::B(A)+S(G)
- R(b);CHECK,XP(D)::B(A)+S(G),XR(b)
- B(d);CHECK,N_GUARD::R(B)+S(E),XB(d)
- B(d);CHECK,XP(H)::R(B)+S(E),XB(d)
- S(a);CHECK::B(A)+S(G),XS(a)
- P(f);CHECK,OGATE,P_SPINP(f),XS(G)::B(A),XP(f)
- Q(i);::B(A)+S(G),XQ(i)
- R(b);::B(A)+S(G)
- B(d);N_GUARD::R(B)+S(E)
- S(a);::B(A)+S(G),XS(a)
- S(h);::B(A)+S(G),XS(h)
- P(g);OGATE::QAB(L)
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).