MESON Chess Problem Database
Problem Display
PID: 187933 (8/3N1p1q/K2N4/p2P2p1/r1Bk1p2/2p2Qpr/4Pb2/6B1 w - - 0 1)
van Dijk, Johannes
Source?, 1910
#2
8 + 11
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qd3
- 2.Qxd3#
- 1...Qe4
- 2.Qxe4#
- 1...Qg8
- 2.Qe4#
- 2.Qd3#
- 1...Qh4
- 2.Qe4#
- 2.Qd3#
- 1...Qh5
- 2.Qe4#
- 2.Qd3#
- 1...Qh6
- 2.Qe4#
- 2.Qd3#
- 1...Qg7
- 2.Qe4#
- 2.Qd3#
- 1...Qh8
- 2.Qe4#
- 2.Qd3#
- 1...Rxc4
- 2.Sb5#
- 1...g2
- 2.Bxf2#
- 1...f5
- 2.Qd3#
- 1...Qd3
- Tries
- 1.Qxf4+?
- 1...Qe4
- 2.Qxe4#
- 1...gxf4!
- 1...Qe4
- 1.e3+?
- 1...fxe3
- 2.Qf6#
- 1...Bxe3!
- 1...fxe3
- 1.Qxf4+?
- Keys
- 1.e4!
- threat
- 2.Qd3#
- 1...Qxe4
- 2.Qxe4#
- 1...Rxc4
- 2.Sb5#
- 1...fxe4 ep
- 2.Qf6#
- 1...Be3
- 2.Qd1#
- 1...g2
- 2.Bxf2#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(k);N_GUARD,P_PINB(D)::QAR1(C),XQ(k)
- Q(k);N_GUARD::QAR1(C),XQ(k)
- R(e);SBLOCK,XB(D)::S(G)
- P(c);N_GUARD::B(A),XB(a)
- P(j);S_CUTQ(k)::QAR1(C)
- Tries
- Try
- Q(C);CHECK,XP(g)
- Vars
- Q(k);N_GUARD,P_SPINQ(k)::QAR1(C),XQ(k)
- Refutation
- P(i);XQ(C)
- Try
- P(B);CHECK,N_PINB(a)
- Vars
- P(g);OGATE,SBLOCK,XP(B)::QAB(C)
- Refutation
- B(a);P_SPINB(a),XP(B)
- Try
- Actual
- P(B);
- Threat
- QAR1(C)
- Vars
- Q(k);OGATE,XP(B)::QAR1(C),XQ(k)
- R(e);SBLOCK,XB(D)::S(G)
- P(g);EP,N_SPINB(a),OGATE,XP(B)::QAB(C)
- B(a);::QAR(C)
- P(c);N_GUARD::B(A),XB(a)
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).