MESON Chess Problem Database
Problem Display
PID: 17844 (1bK5/N7/3p4/2RP2p1/Pk3nR1/pPrB4/n1PQ1N2/6B1 w - - 0 1)
Nanning, Frederik Willem
7th Place, Match: Israel - Netherlands, 1951
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Bc7
- 2.Rb5#
- 1...Sc1
- 2.Qxc3#
- 1...dxc5
- 2.Sc6#
- 1...Bc7
- Tries
- 1.Kb7?
- threat
- 2.Rb5#
- 1...dxc5
- 2.Sc6#
- 1...Kxc5!
- threat
- 1.Kd7?
- threat
- 2.Rb5#
- 1...dxc5
- 2.Sc6#
- 1...Kxc5!
- threat
- 1.Kxb8?
- threat
- 2.Rb5#
- 1...dxc5
- 2.Sc6#
- 1...Kxc5!
- threat
- 1.Bf1?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Be2?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Be4?
- 1...Kxc5
- 2.Sd3#
- 1...Sxd5
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Bc7
- 2.Rb5#
- 1...Sc1
- 2.Qxc3#
- 1...Se2
- 2.Sd3#
- 1...Sg2
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sh3
- 2.Sd3#
- 1...Sh5
- 2.Sd3#
- 1...Se6
- 2.Sd3#
- 1...Sg6
- 2.Sd3#
- 1...Bxa7!
- 1...Kxc5
- 1.Bf5?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Ba6?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Bg6?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Bh7?
- threat
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- 1...Sc1
- 2.Qxc3#
- 1...Kxc5!
- threat
- 1.Qxf4+?
- 1...Kxc5
- 2.Qd4#
- 1...Rc4
- 2.Qxc4#
- 1...gxf4!
- 1...Kxc5
- 1.Kb7?
- Keys
- 1.Bc4!
- threat
- 2.Rb5#
- 1...Kxc5
- 2.Sd3#
- 1...dxc5
- 2.Sc6#
- threat
- 1.Bc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- B(h);N_PINR(I)::R1(I)
- S(a);N_GUARD::QAB1(C),XR(c)
- P(g);SBLOCK,XR(I)::S(K)
- Tries
- Try
- K(L);N_SPINR(I),S_FLIGHT
- Threat
- R1(I)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- K(L);N_SPINR(I),S_FLIGHT
- Threat
- R1(I)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- K(L);N_SPINR(I),P-FLIGHT,XB(h)
- Threat
- R1(I)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);N_PINS(e)
- Vars
- K(d);N_SPINR(c),S_FLIGHT,XR(I)::B(A)+S(D),DCHECK
- S(e);N_GUARD,XP(J)::S(D)
- P(g);SBLOCK,XR(I)::S(K)
- B(h);N_PINR(I)::R1(I)
- S(a);N_GUARD::QAB1(C),XR(c)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
- Refutation
- B(h);XS(K)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- B(F);
- Threat
- S(D)
- Vars
- P(g);SBLOCK,XR(I)::S(K)
- S(a);N_GUARD::QAB1(C),XR(c)
- Refutation
- K(d);N_SPINR(c),N_SPINS(e),S_FLIGHT,XR(I)
- Try
- Q(C);CHECK,N_PINR(c),XS(e)
- Vars
- K(d);S_FLIGHT,XR(I)::QAB1(C)
- R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
- Refutation
- P(f);P_SPINP(f),XQ(C)
- Try
- Actual
- B(F);N_PINS(e),N_SPINR(I)
- Threat
- R1(I)
- Vars
- K(d);N_SPINR(c),S_FLIGHT,XR(I)::B(A)+S(D),DCHECK
- P(g);SBLOCK,XR(I)::S(K)
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).