MESON Chess Problem Database
Problem Display
PID: 264116 (4RN1n/1p4p1/5k2/6pr/3b2P1/B3P3/BR3p2/K1Q5 w - - 0 1)
ten Cate, Pieter
Tijdschrift vd KNSB, 1951
#2
9 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bxb2+
- 2.Bxb2#
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bc5
- 2.Rxf2#
- 1...Be5
- 2.Be7#
- 1...Bb6
- 2.Rxf2#
- 2.Rxb6#
- 1...Ba7
- 2.Rxf2#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- 1...f1Q
- 2.Qxf1#
- 1...f1S
- 2.Qxf1#
- 1...f1B
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...b5
- 2.Qc6#
- 1...b6
- 2.Qc6#
- 1...Bxb2+
- Tries
- 1.Bg8?
- threat
- 2.Re6#
- 1...Bxb2+
- 2.Bxb2#
- 2.Qxb2#
- 1...g6!
- threat
- 1.Qb1?
- threat
- 2.Sd7#
- 2.Qf5#
- 1...Bxb2+
- 2.Bxb2#
- 2.Qxb2#
- 1...f1Q
- 2.Sd7#
- 2.Qxf1#
- 1...f1R
- 2.Sd7#
- 2.Qxf1#
- 1...Rh1
- 2.Sd7#
- 1...g6!
- threat
- 1.Qd1?
- threat
- 2.Qf3#
- 2.Qxd4#
- 1...Bxb2+
- 2.Bxb2#
- 1...Bxe3
- 2.Qd6#
- 2.Qd8#
- 1...g6
- 2.Qxd4#
- 1...f1Q
- 2.Qxf1#
- 1...f1R
- 2.Qxf1#
- 1...Rh3
- 2.Qxd4#
- 1...Bc3
- 2.Qf3#
- 2.Qd6#
- 2.Qd8#
- 1...Bc5
- 2.Rxf2#
- 2.Qf3#
- 1...Be5
- 2.Be7#
- 2.Qd8#
- 1...Bb6
- 2.Rxf2#
- 2.Rxb6#
- 2.Qf3#
- 2.Qd6#
- 1...Ba7
- 2.Rxf2#
- 2.Qf3#
- 2.Qd6#
- 2.Qd8#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- 2.Qf3#
- 1...Rh1!
- threat
- 1.Qc4?
- threat
- 2.Qe6#
- 2.Qxd4#
- 1...Bxb2+
- 2.Bxb2#
- 1...f1Q+
- 2.Qxf1#
- 1...f1R+
- 2.Qxf1#
- 1...Bxe3
- 2.Qe6#
- 1...g6
- 2.Qxd4#
- 1...Bc3
- 2.Qe6#
- 2.Qxc3#
- 1...Bc5
- 2.Rxf2#
- 2.Qe6#
- 1...Be5
- 2.Be7#
- 2.Qe6#
- 1...Bb6
- 2.Rxf2#
- 2.Rxb6#
- 2.Qe6#
- 1...Ba7
- 2.Rxf2#
- 2.Qe6#
- 1...Sg6
- 2.Sd7#
- 2.Qe6#
- 2.Qf7#
- 1...Sf7
- 2.Re6#
- 2.Qe6#
- 2.Qxf7#
- 1...Rh1+!
- threat
- 1.exd4?
- threat
- 2.Be7#
- 2.Rxf2#
- 2.Rb6#
- 1...f1Q
- 2.Be7#
- 2.Rb6#
- 2.Qxf1#
- 1...f1S
- 2.Be7#
- 2.Rf2#
- 2.Rb6#
- 2.Qxf1#
- 1...f1B
- 2.Be7#
- 2.Rf2#
- 2.Rb6#
- 2.Qxf1#
- 1...f1R
- 2.Be7#
- 2.Rb6#
- 2.Qxf1#
- 1...Rh2
- 2.Be7#
- 2.Rb6#
- 1...Rh3
- 2.Be7#
- 2.Rb6#
- 1...Sg6
- 2.Sd7#
- 2.Rb6#
- 1...Sf7
- 2.Be7#
- 2.Rxf2#
- 2.Re6#
- 1...b5
- 2.Be7#
- 2.Rxf2#
- 2.Qc6#
- 1...b6
- 2.Be7#
- 2.Rxf2#
- 2.Rxb6#
- 2.Qc6#
- 1...g6!
- threat
- 1.Bg8?
- Keys
- 1.Bc5!
- threat
- 2.Bxd4#
- 1...Bxb2+
- 2.Qxb2#
- 1...Bxe3
- 2.Rb6#
- 1...Bxc5
- 2.Rxf2#
- 1...Bc3
- 2.Qxc3#
- 1...Be5
- 2.Be7#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- B(b);OGATEB::QAB(B),XB(b)
- B(b);N_PINR(D)::R(D),XP(a)
- B(b);SBLOCK::B(E)
- S(h);SBLOCK::S(I)
- S(h);SBLOCK::R1(H)
- P(a);OGATEB,P_PINQ(B)::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB,P_PINQ(B)::QAR(B),XR(a)
- P(f);N_GUARD::QAR(B)
- Tries
- Try
- B(C);
- Threat
- R1(H)
- Refutation
- P(g);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(d);P_PINQ(B)::S(I)
- Refutation
- P(g);
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,XR(D)::B(E),XB(b)
- P(g);::QAB(B),XB(b)
- P(a);OGATEB,P_PINQ(B)::QAR(B),XQ(a)
- P(a);OGATEB,P_PINQ(B)::QAR(B),XR(a)
- R(d);::QAB(B),XB(b)
- S(h);SBLOCK::S(I)
- Refutation
- R(d);P_PINQ(B)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,OGATE,XR(D)::B(E),XB(b)
- P(a);CHECK,OGATEB::QAR(B),XQ(a)
- P(a);CHECK,OGATEB::QAR(B),XR(a)
- B(b);N_PINR(D),XP(F)::QAR1(B)
- P(g);::QAB(B),XB(b)
- Refutation
- R(d);CHECK
- Try
- P(F);N_SPINR(D),XB(b)
- Threat
- DUALS(3)
- Refutation
- P(g);
- Try
- Actual
- B(E);
- Threat
- B(E),XB(b)
- Vars
- B(b);CHECK,OGATE,XR(D)::QAB(B),XB(b)
- B(b);N_PINR(D),XP(F)::R(D)
- B(b);N_PINR(D),XB(E)::R(D),XP(a)
- B(b);OGATEB::QAB(B),XB(b)
- B(b);SBLOCK::B(E)
- S(h);SBLOCK::S(I)
- S(h);SBLOCK::R1(H)
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).