MESON Chess Problem Database
Problem Display
PID: 162795 (1Q2b2b/P7/r7/1R1p2N1/qP1k2pp/2pP3n/2P1K2B/N7 w - - 0 1)
Ewald, Kurt
Die Schwalbe, 2016
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxc2+
- 2.Sxc2#
- 1...Qb3
- 2.Sxb3#
- 1...Qxb5
- 2.Sb3#
- 1...Qa5
- 2.Sb3#
- 1...Ra5
- 2.Se6#
- 2.Qb6#
- 1...Rb6
- 2.Qxb6#
- 1...Re6+
- 2.Sxe6#
- 1...Rf6
- 2.Be5#
- 2.Qe5#
- 1...Rxa7
- 2.Se6#
- 2.Qb6#
- 1...Bc6
- 2.Se6#
- 2.Qxh8#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sg1+
- 2.Bxg1#
- 1...Sf4+
- 2.Qxf4#
- 1...Sxg5
- 2.Bg1#
- 1...g3
- 2.Sf3#
- 1...Qxc2+
- Tries
- 1.Bg1+?
- 1...Sf2
- 2.Bxf2#
- 2.Qf4#
- 1...Sxg1+!
- 1...Sf2
- 1.Qg3?
- threat
- 2.Qe3#
- 1...Qxc2+
- 2.Sxc2#
- 1...Re6+
- 2.Sxe6#
- 1...Sg1+
- 2.Bxg1#
- 2.Qxg1#
- 1...Sf4+
- 2.Qxf4#
- 1...hxg3!
- threat
- 1.Qd6?
- threat
- 2.Se6#
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Qxc2+
- 2.Sxc2#
- 1...Sg1+
- 2.Bxg1#
- 1...Sf4+
- 2.Qxf4#
- 1...Qxb5
- 2.Sb3#
- 2.Se6#
- 1...Qxb4
- 2.Se6#
- 2.Rxb4#
- 2.Rxd5#
- 2.Qxb4#
- 2.Qxd5#
- 1...Bxb5
- 2.Se6#
- 2.Qc5#
- 1...Sxg5
- 2.Bg1#
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Qb3
- 2.Sxb3#
- 2.Se6#
- 2.Qc5#
- 1...Qa2
- 2.Se6#
- 2.Qc5#
- 1...Qa5
- 2.Sb3#
- 2.Se6#
- 2.Qc5#
- 2.Qxd5#
- 1...Ra5
- 2.Se6#
- 2.Qc5#
- 2.Qxd5#
- 2.Qb6#
- 1...Rc6
- 2.Se6#
- 2.Rxd5#
- 2.Qxd5#
- 1...Bc6
- 2.Se6#
- 2.Qc5#
- 1...Bd7
- 2.Rxd5#
- 2.Qc5#
- 2.Qxd5#
- 1...Bf7
- 2.Qc5#
- 1...g3
- 2.Sf3#
- 2.Se6#
- 2.Rxd5#
- 2.Qxd5#
- 1...Rxd6!
- threat
- 1.Qc7?
- threat
- 2.Qc5#
- 1...Qxc2+
- 2.Sxc2#
- 1...Re6+
- 2.Sxe6#
- 1...Sg1+
- 2.Bxg1#
- 1...Sf4+
- 2.Qxf4#
- 1...Qxb5
- 2.Sb3#
- 1...Qxb4
- 2.Rxb4#
- 1...Bc6
- 2.Se6#
- 1...g3
- 2.Sf3#
- 1...Rc6!
- threat
- 1.Qxe8?
- threat
- 2.Qe3#
- 1...Qxc2+
- 2.Sxc2#
- 1...Re6+
- 2.Sxe6#
- 1...Sg1+
- 2.Bxg1#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Sf4+!
- threat
- 1.Bg1+?
- Keys
- 1.Rb6!
- threat
- 2.Se6#
- 1...Qxc2+
- 2.Sxc2#
- 1...Sg1+
- 2.Bxg1#
- 1...Sf4+
- 2.Qxf4#
- 1...Rxb6
- 2.Qxb6#
- 1...Sxg5
- 2.Bg1#
- 1...Qc6
- 2.Sb3#
- 1...Qd7
- 2.Sb3#
- 1...Bd7
- 2.Qxh8#
- 1...Bf7
- 2.Qxh8#
- threat
- 1.Rb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- Q(c);N_GUARD::S(A),XQ(c)
- Q(c);N_GUARD,P_PINP(E),XR(G)::S(A)
- Q(c);N_GUARD::S(A)
- R(h);N_GUARD::QAB(J),XR(h)
- R(h);CHECK,N_GUARD::S(H),XR(h)
- S(b);CHECK,N_GUARD::B(D),XS(b)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- S(b);N_GUARD,XS(H)::B(D)
- P(e);N_GUARD::S(H)
- Tries
- Try
- B(D);CHECK
- Refutation
- S(b);CHECK,XB(D)
- Try
- Q(J);
- Threat
- QAB1(J)
- Vars
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- R(h);CHECK,N_GUARD::S(H),XR(h)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- Refutation
- P(f);XQ(J)
- Try
- Q(J);P_PINP(g)
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- S(b);CHECK,N_GUARD::B(D),XS(b)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- B(i);::QAB1(J)
- Refutation
- R(h);N_SPINP(g),XQ(J)
- Try
- Q(J);
- Threat
- QAB1(J)
- Vars
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- R(h);CHECK,N_GUARD::S(H),XR(h)
- S(b);CHECK,N_GUARD::B(D),XS(b)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- Q(c);N_GUARD,P_PINP(E),XR(G)::S(A)
- Q(c);OGATE,XP(F)::R(G),XQ(c)
- B(i);S_CUTR(h)::S(H)
- P(e);N_GUARD::S(H)
- Refutation
- R(h);
- Try
- Q(J);XB(i)
- Threat
- QAB1(J)
- Vars
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- R(h);CHECK,N_GUARD::S(H),XR(h)
- S(b);CHECK,N_GUARD::B(D),XS(b)
- Refutation
- S(b);CHECK
- Try
- Actual
- R(G);
- Threat
- S(H)
- Vars
- Q(c);CHECK,XP(B)::S(A),XQ(c)
- S(b);CHECK,N_GUARD::B(D),XS(b)
- S(b);CHECK,N_GUARD::QAR2(J),XS(b)
- R(h);OGATE,XR(G)::QAB(J),XR(h)
- S(b);N_GUARD,XS(H)::B(D)
- Q(c);N_GUARD::S(A)
- B(i);OGATE::QAB(J),XB(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).