MESON Chess Problem Database
Problem Display
PID: 87877 (4Q3/1p2p2p/1P2K2P/3p1p2/1P5P/4k3/1R6/4N2B w - - 0 1)
Valuska, Jan
1st HM., The Problemist, 1975
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Qb5?
- 1...Kd4
- 2.Qd3#
- 2.Qc5#
- 1...d4
- 2.Qe5#
- 1...f4
- 2.Qd3#
- 1...Kf4!
- 1...Kd4
- 1.Qh5?
- 1...Kf4
- 2.Qf3#
- 2.Qg5#
- 1...d4
- 2.Qf3#
- 1...f4
- 2.Qe5#
- 1...Kd4!
- 1...Kf4
- 1.Qc8?
- 1...Kd4
- 2.Qc5#
- 1...d4
- 2.Qc1#
- 1...f4
- 2.Qc3#
- 1...Kf4!
- 1...Kd4
- 1.Qg8?
- 1...Kf4
- 2.Qg5#
- 1...d4
- 2.Qg3#
- 1...f4
- 2.Qg1#
- 1...Kd4!
- 1...Kf4
- 1.Qb5?
- Keys
- 1.Qxe7!
- 1...Kd4
- 2.Qc5#
- 1...Kf4
- 2.Qg5#
- 1...d4
- 2.Kxf5#
- 1...f4
- 2.Kxd5#
- 1...Kd4
- 1.Qxe7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(I);
- Vars
- P(b);OGATE::QAR2(I)
- P(c);SBLOCK::QAR1(I)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(I);
- Vars
- P(b);SBLOCK::QAR1(I)
- P(c);OGATE::QAR2(I)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(I);
- Vars
- K(a);S_FLIGHT::QAB1(I)
- P(b);SBLOCK::QAB(I)
- P(c);SBLOCK::QAR2(I)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(I);
- Vars
- K(a);S_FLIGHT::QAB1(I)
- P(b);SBLOCK::QAR2(I)
- P(c);SBLOCK::QAB(I)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- Q(I);XP(e)
- Vars
- K(a);S_FLIGHT::QAB1(I)
- P(b);SBLOCK::QAR(I)+K(G),XP(c)
- P(c);SBLOCK::QAR(I)+K(G),XP(b)
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).