MESON Chess Problem Database
Problem Display
PID: 227587 (2N1B2K/p3Pp2/N7/n2k4/4R2Q/b1P5/qp6/7n w - - 0 1)
van Dijk, Johannes
Noord-Hollandsch Dagblad, 1926
#2
8 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bc5
- 2.Sc7#
- 1...Sb3
- 2.c4#
- 1...Sc6
- 2.Bxf7#
- 1...Bc5
- Tries
- 1.Sb6+?
- 1...Kd6
- 2.Qf4#
- 1...axb6!
- 1...Kd6
- 1.Re1?
- threat
- 2.Qd4#
- 2.Qe4#
- 1...b1Q
- 2.Qd4#
- 1...b1B
- 2.Qd4#
- 1...Qb1
- 2.Qd4#
- 1...Bc5
- 2.Sc7#
- 2.Qe4#
- 1...Sf2
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sb3
- 2.Qe4#
- 2.c4#
- 1...Sc6
- 2.Bxf7#
- 2.Qe4#
- 1...f5
- 2.Qd4#
- 1...Qc4!
- threat
- 1.Re2?
- threat
- 2.Qd4#
- 2.Qe4#
- 1...b1Q
- 2.Qd4#
- 1...b1B
- 2.Qd4#
- 1...Qb1
- 2.Qd4#
- 1...Bc5
- 2.Sc7#
- 2.Qe4#
- 1...Sf2
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sb3
- 2.Qe4#
- 2.c4#
- 1...Sc6
- 2.Bxf7#
- 2.Qe4#
- 1...f5
- 2.Qd4#
- 1...Qc4!
- threat
- 1.Re3?
- threat
- 2.Qd4#
- 2.Qe4#
- 1...b1Q
- 2.Qd4#
- 1...b1B
- 2.Qd4#
- 1...Qb1
- 2.Qd4#
- 1...Bc5
- 2.Sc7#
- 2.Qe4#
- 1...Sf2
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sb3
- 2.Qe4#
- 2.c4#
- 1...Sc6
- 2.Bxf7#
- 2.Qe4#
- 1...f5
- 2.Qd4#
- 1...Qc4!
- threat
- 1.Qg5+?
- 1...f5
- 2.Qxf5#
- 1...Kxe4!
- 1...f5
- 1.Qf6?
- threat
- 2.Rd4#
- 2.Qd4#
- 2.Qe5#
- 2.Qf5#
- 1...Qc4
- 2.Re5#
- 2.Qe5#
- 2.Qf5#
- 1...Bc5
- 2.Qe5#
- 2.Qf5#
- 1...Bd6
- 2.Rd4#
- 2.Qd4#
- 1...Sg3
- 2.Rd4#
- 2.Qd4#
- 2.Qe5#
- 1...Sb3
- 2.Bc6#
- 2.Qe5#
- 2.Qf5#
- 2.Qc6#
- 1...Sc4
- 2.Bc6#
- 2.Rd4#
- 2.Qd4#
- 2.Qc6#
- 1...Sc6
- 2.Bxc6#
- 2.Qxc6#
- 1...Kxe4!
- threat
- 1.Qh5+?
- 1...f5
- 2.Qxf5#
- 1...Kxe4!
- 1...f5
- 1.Sb6+?
- Keys
- 1.Qe1!
- threat
- 2.Rd4#
- 1...Qc4
- 2.Re5#
- 1...Bc5
- 2.Sc7#
- 1...Sb3
- 2.c4#
- 1...Sc6
- 2.Bxf7#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(d);SBLOCK::S(D)
- S(e);N_GUARD,S_CUTQ(b)::P(A)
- S(e);SBLOCK::B(G),XP(h)
- Tries
- Try
- S(F);CHECK
- Vars
- K(f);P-FLIGHT::QAB(C)
- Refutation
- P(g);XS(F)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(c);::QAR1(C)
- Q(b);::QAR1(C)
- S(a);::QAR1(C)
- P(h);::QAR1(C)
- Refutation
- Q(b);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(c);::QAR1(C)
- Q(b);::QAR1(C)
- S(a);::QAR1(C)
- P(h);::QAR1(C)
- Refutation
- Q(b);
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(c);::QAR1(C)
- Q(b);::QAR1(C)
- S(a);::QAR1(C)
- P(h);::QAR1(C)
- Refutation
- Q(b);
- Try
- Q(C);CHECK
- Vars
- P(h);P_SPINP(h)::QAR2(C),XP(h)
- Refutation
- K(f);S_FLIGHT,XR(B)
- Try
- Q(C);
- Threat
- DUALS(4)
- Refutation
- K(f);S_FLIGHT,XR(B)
- Try
- Q(C);CHECK
- Vars
- P(h);P_SPINP(h)::QAR2(C),XP(h)
- Refutation
- K(f);S_FLIGHT,XR(B)
- Try
- Actual
- Q(C);
- Threat
- R1(B)
- Vars
- Q(b);SBLOCK::R1(B)
- B(d);SBLOCK::S(D)
- S(e);N_GUARD,S_CUTQ(b)::P(A)
- S(e);SBLOCK::B(G),XP(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).