MESON Chess Problem Database
Problem Display
PID: 102513 (8/3p4/3P1p2/2K1kp2/3pN2Q/3P4/8/8 w - - 0 1)
Saferis, AM
Europe Echecs, 1964
#2
5 + 5
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Ke6
- 2.Qxf6#
- 1...fxe4
- 2.Qxe4#
- 1...f4
- 2.Qxf6#
- 1...Ke6
- Tries
- 1.Kc4?
- 1...Ke6
- 2.Qxf6#
- 1...f4
- 2.Qxf6#
- 1...fxe4!
- 1...Ke6
- 1.Qg5?
- 1...Ke6
- 2.Qxf6#
- 1...fxg5!
- 1...Ke6
- 1.Qh5?
- 1...Ke6
- 2.Qe8#
- 1...Kf4!
- 1...Ke6
- 1.Qh6?
- 1...Ke6
- 2.Qxf6#
- 1...f4
- 2.Qxf6#
- 1...fxe4!
- 1...Ke6
- 1.Kc4?
- Keys
- 1.Qe1!
- 1...Kf4
- 2.Qg3#
- 1...Ke6
- 2.Sg5#
- 1...fxe4
- 2.Qxe4#
- 1...f4
- 2.Sg3#
- 1...Kf4
- 1.Qe1!
Anticipated by 21309(1918), 77239(1927)
This anticipates 12404(1978), 150698(1982), 79321(1988), 203054(1990), 245207(2000)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);P-FLIGHT::QAR1(C),XP(d)
- P(c);OGATE,XS(B)::QAR1(C),XP(c)
- P(c);::QAB1(C),XP(d)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- K(b);P-FLIGHT::QAR1(C),XP(d)
- P(c);::QAB1(C),XP(d)
- Refutation
- P(c);XS(B)
- Try
- Q(C);P_PINP(c)
- Vars
- K(b);N_SPINP(c),P-FLIGHT::QAR1(C),XP(d)
- Refutation
- P(d);N_SPINP(c),XQ(C)
- Try
- Q(C);P_PINP(c)
- Vars
- K(b);N_SPINP(c),P-FLIGHT::QAR2(C)
- Refutation
- K(b);N_SPINP(c),S_FLIGHT
- Try
- Q(C);
- Vars
- K(b);P-FLIGHT,P_SPINP(d)::QAR1(C),XP(d)
- P(c);::QAB1(C),XP(d)
- Refutation
- P(c);XS(B)
- Try
- Actual
- Q(C);
- Vars
- K(b);S_FLIGHT::QAB1(C)
- K(b);P-FLIGHT::QAR(C)+S(B),DCHECK
- P(c);OGATE,P_SPINP(c),XS(B)::QAR1(C),XP(c)
- P(c);SBLOCK::QAR(C)+S(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).