MESON Chess Problem Database
Problem Display
PID: 168278 (8/2R5/2Ppkp2/7K/3BNp2/1PP2P2/8/Q7 w - - 0 1)
Petite, Efren
3rd HM., Problem (Zagreb), 1962
#2
9 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Tries
- 1.Sc5+?
- 1...Kd5
- 2.c4#
- 1...Kf5
- 2.Qb1#
- 1...dxc5!
- 1...Kd5
- 1.Sg5+?
- 1...Kd5
- 2.Qa5#
- 2.c4#
- 1...Kf5
- 2.Qb1#
- 1...fxg5!
- 1...Kd5
- 1.Qe1?
- 1...Kd5
- 2.Sxf6#
- 1...Kf5
- 2.Sxd6#
- 1...f5
- 2.Sf6#
- 1...d5!
- 1...Kd5
- 1.Qg1?
- 1...Kd5
- 2.Qg8#
- 1...Kf5
- 2.Qg4#
- 1...f5
- 2.Qg8#
- 1...d5!
- 1...Kd5
- 1.Qa5?
- 1...f5
- 2.Sg5#
- 1...d5!
- 1...f5
- 1.Qa6?
- 1...Kd5
- 2.Qc4#
- 1...Kf5
- 2.Qc8#
- 1...d5
- 2.Qc8#
- 1...f5!
- 1...Kd5
- 1.Sc5+?
- Keys
- 1.Qa8!
- 1...Kd5
- 2.Qg8#
- 1...Kf5
- 2.Qc8#
- 1...d5
- 2.Qc8#
- 1...f5
- 2.Qg8#
- 1...Kd5
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(F);CHECK
- Vars
- K(c);S_FLIGHT::P(C)
- K(c);S_FLIGHT::QAB(A)
- Refutation
- P(b);XS(F)
- Try
- S(F);CHECK
- Vars
- K(c);S_FLIGHT::QAB(A)
- Refutation
- P(d);XS(F)
- Try
- Q(A);
- Vars
- K(c);S_FLIGHT::S(F),XP(d)
- K(c);S_FLIGHT::S(F),XP(b)
- P(d);SBLOCK::QAR(A)+S(F)
- Refutation
- P(b);
- Try
- Q(A);
- Vars
- K(c);S_FLIGHT::QAB(A)
- K(c);S_FLIGHT::QAB1(A)
- P(d);SBLOCK::QAB(A)
- Refutation
- P(b);
- Try
- Q(A);
- Vars
- P(d);N_GUARD::S(F)
- Refutation
- P(b);
- Try
- Q(A);
- Vars
- K(c);S_FLIGHT::QAB1(A)
- K(c);S_FLIGHT::QAB(A)
- P(b);SBLOCK::QAB(A)
- Refutation
- P(d);
- Try
- Actual
- Q(A);
- Vars
- K(c);S_FLIGHT::QAB(A)
- P(b);SBLOCK::QAB(A)
- P(d);SBLOCK::QAB(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).