MESON Chess Problem Database
Problem Display
PID: 87875 (8/4Q3/3pbp2/4k3/3p4/2NB1K2/8/8 w - - 0 1)
Valuska, Jan
1st HM., Problemista, 1966
#2
4 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...d5
- 2.Qc7#
- 1...f5
- 2.Qg7#
- 1...d5
- Tries
- 1.Kg3?
- 1...d5
- 2.Qc7#
- 1...f5
- 2.Qg7#
- 1...dxc3!
- 1...d5
- 1.Sb5?
- threat
- 2.Qxd6#
- 1...Kd5
- 2.Qxd6#
- 1...d5
- 2.Qd6#
- 2.Qc7#
- 1...f5!
- threat
- 1.Qb7?
- threat
- 2.Qe4#
- 1...Bd5+
- 2.Qxd5#
- 1...Bf5
- 2.Qd5#
- 1...d5
- 2.Qc7#
- 2.Qb8#
- 1...f5
- 2.Qg7#
- 1...Bg4+!
- threat
- 1.Qe8?
- 1...d5
- 2.Qb8#
- 1...f5
- 2.Qh8#
- 1...dxc3!
- 1...d5
- 1.Kg3?
- Keys
- 1.Se4!
- 1...Kd5
- 2.Qxd6#
- 1...Kf5
- 2.Qxf6#
- 1...f5
- 2.Qxd6#
- 1...d5
- 2.Qxf6#
- 1...Kd5
- 1.Se4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- P(c);OGATEB::QAB(D)
- P(e);OGATEB::QAB(D)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- P(c);OGATEB::QAB(D)
- P(e);OGATEB::QAB(D)
- Refutation
- P(a);XS(A)
- Try
- S(A);
- Threat
- QAB1(D),XP(c)
- Vars
- K(b);N_SPINB(d),P-FLIGHT::QAR1(D),XP(c)
- Refutation
- P(e);
- Try
- Q(D);N_PINB(d)
- Threat
- QAR1(D)
- Vars
- B(d);CHECK,N_GUARD::QAR1(D),XB(d)
- B(d);N_GUARD::QAR1(D)
- P(e);OGATEB::QAB(D)
- Refutation
- B(d);CHECK
- Try
- Q(D);
- Vars
- P(c);OGATEB::QAB(D)
- P(e);OGATEB::QAB(D)
- Refutation
- P(a);XS(A)
- Try
- Actual
- S(A);
- Vars
- K(b);N_SPINB(d),P-FLIGHT::QAR1(D),XP(c)
- K(b);N_SPINB(d),P-FLIGHT::QAR1(D),XP(e)
- P(e);SBLOCK::QAB1(D),XP(c)
- P(c);SBLOCK::QAB1(D),XP(e)
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).