MESON Chess Problem Database
Problem Display
PID: 138416 (nBb2K2/N1Pr1p2/Np1k4/p7/2P3B1/1p2Q3/R6b/3r4 w - - 0 1)
Kohring, Rolf
Die Schwalbe, 2010
#2
9 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Rd2#
- 2.Qd4#
- 1...Rb1
- 2.Rd2#
- 2.Qd4#
- 1...Rc1
- 2.Rd2#
- 2.Qd4#
- 1...Re1
- 2.Rd2#
- 2.Qd4#
- 1...Rf1
- 2.Rd2#
- 2.Qd4#
- 1...Rg1
- 2.Rd2#
- 2.Qd4#
- 1...Rh1
- 2.Rd2#
- 2.Qd4#
- 1...Rd2
- 2.Rxd2#
- 1...Rd4
- 2.Qxd4#
- 1...Rxc7
- 2.Qe7#
- 1...Re7
- 2.Qxe7#
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bg1
- 2.Qf4#
- 2.Qg3#
- 1...Bg3
- 2.Qxg3#
- 1...Bf4
- 2.Qxf4#
- 1...Bxa6
- 2.c8S#
- 1...Bb7
- 2.c8S#
- 1...b5
- 2.Qc5#
- 1...f6
- 2.Qe6#
- 1...Ra1
- Tries
- 1.Sb4?
- threat
- 2.Sb5#
- 2.Sxc8#
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rd4
- 2.Qxd4#
- 1...Rd5
- 2.Sxc8#
- 1...Ba6
- 2.c8S#
- 1...Bb7
- 2.Sb5#
- 2.c8S#
- 1...b5
- 2.Sxb5#
- 2.Sxc8#
- 2.c5#
- 1...axb4!
- threat
- 1.Bxd7?
- threat
- 2.Qe7#
- 1...Kxd7
- 2.Qe7#
- 1...Re1
- 2.Rd2#
- 2.Qd4#
- 1...Be5!
- threat
- 1.Rxh2?
- threat
- 2.Qf4#
- 2.Qg3#
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxa6
- 2.c8S#
- 1...Re1
- 2.Rd2#
- 2.Qd4#
- 1...Rf1
- 2.Rd2#
- 2.Qd4#
- 1...Rg1
- 2.Rd2#
- 2.Qd4#
- 2.Qf4#
- 1...Rd3
- 2.Qf4#
- 1...Rd4
- 2.Qxd4#
- 1...Re7
- 2.Qxe7#
- 1...f5
- 2.Rh6#
- 1...Rd5!
- threat
- 1.Qg5?
- threat
- 2.Qf6#
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rxc7
- 2.Qe7#
- 1...Bxa6
- 2.c8S#
- 1...Re1
- 2.Rd2#
- 2.Qd5#
- 1...Rf1
- 2.Rd2#
- 2.Qd5#
- 1...Re7
- 2.Qxe7#
- 1...f6
- 2.Qxf6#
- 1...Be5!
- threat
- 1.Qh6+?
- 1...f6
- 2.Qxh2#
- 2.Qxf6#
- 1...Ke5!
- 1...f6
- 1.Qe4?
- threat
- 2.Sb5#
- 2.Sxc8#
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rd5
- 2.Qxd5#
- 1...Bb7
- 2.Sb5#
- 2.c8S#
- 1...b5
- 2.Sxb5#
- 2.Sxc8#
- 2.c5#
- 1...Bxa6!
- threat
- 1.c5+?
- 1...bxc5
- 2.Qxc5#
- 1...Kd5!
- 1...bxc5
- 1.Sb4?
- Keys
- 1.Rxa5!
- 1...Rd8+
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rxc7
- 2.Qe7#
- 1...Bxa6
- 2.c8S#
- 1...Sxc7
- 2.Qxb6#
- 1...bxa5
- 2.Qc5#
- 1...Rd5
- 2.Rxd5#
- 1...Ra1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rb1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rc1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Re1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rf1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rg1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rh1
- 2.Rd5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd3#
- 1...Rd2
- 2.Qxd2#
- 1...Rd3
- 2.Qxd3#
- 1...Rd4
- 2.Qxd4#
- 1...Re7
- 2.Qxe7#
- 1...Bg1
- 2.Qf4#
- 2.Qg3#
- 2.Qe5#
- 1...Bg3
- 2.Qxg3#
- 1...Bf4
- 2.Qxf4#
- 1...Be5
- 2.Qxe5#
- 1...Bb7
- 2.c8S#
- 1...b2
- 2.Qa3#
- 1...b5
- 2.Qc5#
- 1...f5
- 2.Qh6#
- 1...f6
- 2.Qe6#
- 1...Rd8+
- 1.Rxa5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::R(A),XR(a)
- R(a);N_GUARD::QAR2(B),XR(a)
- R(g);N_GUARD,P_SPINR(g),XP(G)::QAB1(B)
- R(g);N_GUARD::QAB1(B),XR(g)
- R(g);CHECK,OGATE::PXR(g)=Q
- B(b);N_GUARD::QAB(B),XB(b)
- B(j);OGATE,XS(E)::P=S
- B(j);OGATE::P=S
- P(e);N_GUARD::QAB1(B)
- P(h);N_GUARD::QAR1(B)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- R(a);N_GUARD::QAR2(B),XR(a)
- R(a);::S(F),XB(j)
- B(j);OGATE::P=S
- Refutation
- P(d);XS(E)
- Try
- B(D);XR(g)
- Threat
- QAB1(B)
- Vars
- K(f);P-FLIGHT,XB(D)::QAR1(B)
- Refutation
- B(b);
- Try
- R(A);XB(b)
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- B(j);OGATE,XS(E)::P=S
- R(a);::QAB(B)
- R(a);N_GUARD::QAR2(B),XR(a)
- R(g);N_GUARD::QAB1(B),XR(g)
- P(h);N_GUARD::R(A)
- Refutation
- R(a);
- Try
- Q(B);
- Threat
- QAR2(B)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- R(g);N_GUARD,P_SPINR(g),XP(G)::QAB1(B)
- B(j);OGATE,XS(E)::P=S
- R(g);N_GUARD::QAB1(B),XR(g)
- P(h);::QAR2(B),XP(h)
- Refutation
- B(b);
- Try
- Q(B);CHECK
- Refutation
- K(f);S_FLIGHT
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- R(a);N_GUARD::QAR1(B),XR(a)
- Refutation
- B(j);XS(E)
- Try
- P(C);CHECK
- Vars
- P(e);OGATE,XP(C)::QAB1(B),XP(e)
- Refutation
- K(f);P-FLIGHT
- Try
- Actual
- R(A);XP(d)
- Vars
- R(g);CHECK,OGATE::PXR(g)=Q
- R(g);N_GUARD,P_SPINR(g),XP(G)::QAB1(B)
- B(j);OGATE,XS(E)::P=S
- S(i);N_GUARD,P_SPINS(i),XP(G)::QAR2(B),XP(e)
- P(e);N_GUARD,XR(A)::QAB1(B)
- R(a);N_GUARD::R1(A),XR(a)
- R(a);N_GUARD::QAR(B),XR(a)
- R(a);N_GUARD::QAR2(B),XR(a)
- R(g);N_GUARD::QAB1(B),XR(g)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);N_GUARD::QAB1(B),XB(b)
- B(j);OGATE::P=S
- P(c);OGATE::QAB(B)
- P(e);N_GUARD::QAB1(B)
- P(h);N_GUARD::QAR(B)
- P(h);N_GUARD::QAR1(B)
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).