MESON Chess Problem Database
Problem Display
PID: 140312 (1bRn4/p1r1p3/PpRB1pN1/1p1k1N2/p7/7B/4QP2/4K2b w - - 0 1)
den Toom, Cornelis
Probleemblad, 1976
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Rxc6
- 2.Sf4#
- 2.Sgxe7#
- 1...Rb7
- 2.Sf4#
- 1...Rd7
- 2.Sf4#
- 1...Rxc8
- 2.Sgxe7#
- 1...Bg2
- 2.Bxg2#
- 1...Sxc6
- 2.Sf4#
- 1...b4
- 2.Qc4#
- 1...Rxc6
- Tries
- 1.Sfxe7+?
- 1...Kd4
- 2.Qe3#
- 1...Rxe7!
- 1...Kd4
- 1.Bb4?
- 1...Kxc6
- 2.Sfxe7#
- 1...Rxc6
- 2.Sgxe7#
- 1...Rxc8
- 2.Sgxe7#
- 1...Sxc6
- 2.Sf4#
- 1...Rb7
- 2.Qd3#
- 1...Rd7
- 2.Qd3#
- 1...Bg2
- 2.Bxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.Qxb5#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sf7
- 2.Qe6#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...a3!
- 1...Kxc6
- 1.Rc5+?
- 1...Rxc5
- 2.Sf4#
- 2.Sgxe7#
- 1...bxc5!
- 1...Rxc5
- 1.R6xc7?
- threat
- 2.Sf4#
- 2.Sgxe7#
- 1...Bxc7
- 2.Sgxe7#
- 1...exd6
- 2.Sf4#
- 2.Sge7#
- 1...Be4
- 2.Sf4#
- 2.Qa2#
- 1...Se6
- 2.Sgxe7#
- 1...Sc6
- 2.Sf4#
- 1...e6
- 2.Sf4#
- 2.Sge7#
- 2.Qd3#
- 1...e5!
- threat
- 1.R8xc7?
- threat
- 2.Sf4#
- 2.Sgxe7#
- 1...Bxc7
- 2.Sgxe7#
- 1...Sxc6
- 2.Sf4#
- 1...exd6
- 2.Sf4#
- 2.Sge7#
- 2.Rxd6#
- 1...Be4
- 2.Sf4#
- 2.Qa2#
- 1...Se6
- 2.Sgxe7#
- 1...e6
- 2.Sf4#
- 2.Sge7#
- 2.Qd3#
- 1...e5!
- threat
- 1.Qd1+?
- 1...Ke4
- 2.Sg3#
- 1...Kxc6
- 2.Sfxe7#
- 1...Ke6!
- 1...Ke4
- 1.Qd3+?
- 1...Kxc6
- 2.Sfxe7#
- 1...Ke6!
- 1...Kxc6
- 1.Qe5+?
- 1...Kxc6
- 2.Sd4#
- 2.Sfxe7#
- 1...fxe5!
- 1...Kxc6
- 1.Sfxe7+?
- Keys
- 1.Ba3!
- 1...Kxc6
- 2.Sfxe7#
- 1...Rxc6
- 2.Sgxe7#
- 1...Rxc8
- 2.Sgxe7#
- 1...Sxc6
- 2.Sf4#
- 1...Rb7
- 2.Qd3#
- 1...Rd7
- 2.Qd3#
- 1...Bg2
- 2.Bxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.Qxb5#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sf7
- 2.Qe6#
- 1...b4
- 2.Qc4#
- 1...e5
- 2.Rd6#
- 1...e6
- 2.Rd6#
- 1...Kxc6
- 1.Ba3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- R(h);::S(I)
- R(h);N_GUARD,XR(J)::S(I),XP(i)
- B(a);N_GUARD::B(D),XB(a)
- S(k);SBLOCK,XR(G)::S(I)
- P(c);N_GUARD::QAB1(B)
- Tries
- Try
- S(E);CHECK,XP(i)
- Vars
- K(d);P-FLIGHT::QAB1(B)
- Refutation
- R(h);P_PINQ(B),XS(E)
- Try
- B(H);
- Vars
- K(d);P_SPINR(h),S_FLIGHT,XR(G)::S(E),XP(i)
- R(h);N_GUARD,XR(G)::S(I),XP(i)
- R(h);N_GUARD,XR(J)::S(I),XP(i)
- S(k);SBLOCK,XR(G)::S(I)
- R(h);::QAR2(B)
- B(a);N_GUARD::B(D),XB(a)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);SBLOCK::QAR2(B),XP(c)
- S(k);N_GUARD::QAB1(B),XS(k)
- S(k);N_GUARD::QAB1(B)
- P(i);N_GUARD::R1(G)
- Refutation
- P(b);
- Try
- R(G);CHECK
- Refutation
- P(e);XR(G)
- Try
- R(G);XR(h)
- Threat
- DUALS(2)
- Vars
- B(j);XR(G)::S(I),XP(i)
- S(k);::S(I),XP(i)
- S(k);::S(I)
- Refutation
- P(i);
- Try
- R(J);XR(h)
- Threat
- DUALS(2)
- Vars
- B(j);XR(J)::S(I),XP(i)
- S(k);XR(G)::S(I)
- S(k);::S(I),XP(i)
- Refutation
- P(i);
- Try
- Q(B);CHECK
- Vars
- K(d);S_FLIGHT::S(E)
- K(d);P_SPINR(h),S_FLIGHT,XR(G)::S(E),XP(i)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(B);CHECK
- Vars
- K(d);P_SPINR(h),S_FLIGHT,XR(G)::S(E),XP(i)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(B);CHECK
- Refutation
- P(f);XQ(B)
- Try
- Actual
- B(H);
- Vars
- K(d);P_SPINR(h),S_FLIGHT,XR(G)::S(E),XP(i)
- R(h);N_GUARD,XR(G)::S(I),XP(i)
- R(h);N_GUARD,XR(J)::S(I),XP(i)
- S(k);SBLOCK,XR(G)::S(I)
- R(h);::QAR2(B)
- B(a);N_GUARD::B(D),XB(a)
- B(a);N_GUARD::QAB(B),XB(a)
- B(a);SBLOCK::QAR2(B),XP(c)
- S(k);N_GUARD::QAB1(B),XS(k)
- S(k);N_GUARD::QAB1(B)
- P(c);N_GUARD::QAB1(B)
- P(i);N_GUARD::R1(G)
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).