MESON Chess Problem Database
Problem Display
PID: 199853 (B1N4b/2R5/4P2p/3PkppN/4P3/2P3R1/n2B4/1Q4nK w - - 0 1)
Degener, Udo
Comm., Suomen Shakki, 1989
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Sxc3
- 2.Bxc3#
- 1...g4
- 2.Bf4#
- 1...Sxc3
- Tries
- 1.Re3?
- threat
- 2.exf5#
- 1...Sxc3
- 2.Bxc3#
- 1...fxe4
- 2.Qxe4#
- 1...f4!
- threat
- 1.Rxg5?
- threat
- 2.Bf4#
- 2.Rxf5#
- 1...Sxc3
- 2.Bxc3#
- 1...Se2
- 2.Rxf5#
- 1...Sh3
- 2.Rxf5#
- 1...hxg5!
- threat
- 1.Rc4?
- threat
- 2.Qb8#
- 1...fxe4
- 2.Qxe4#
- 1...Sb4!
- threat
- 1.Rf7?
- threat
- 2.Rxf5#
- 1...Sxc3
- 2.Bxc3#
- 1...fxe4
- 2.Qb8#
- 1...f4
- 2.Rf5#
- 1...Bf6!
- threat
- 1.exf5?
- threat
- 2.Re3#
- 1...Sxc3
- 2.Bxc3#
- 1...Sf3!
- threat
- 1.Re3?
- Keys
- 1.Qb8!
- threat
- 2.Rc4#
- 1...Kxe4
- 2.Re3#
- 1...fxe4
- 2.Rf7#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(b);OGATE,XP(D)::B(C),XS(b)
- P(e);N_GUARD::B(C)
- Tries
- Try
- R(E);
- Threat
- R(E)+P(F),XP(d)
- Vars
- S(b);OGATE,XP(D)::B(C),XS(b)
- P(d);OGATE,P_SPINP(d),XP(F)::QAR1(A),XP(d)
- Refutation
- P(d);
- Try
- R(E);P_PINP(d),XP(e)
- Threat
- DUALS(2)
- Vars
- S(b);OGATE,XP(D)::B(C),XS(b)
- S(a);::R1(E),XP(d)
- Refutation
- P(f);N_SPINP(d),XR(E)
- Try
- R(J);
- Threat
- QAB(A)
- Vars
- P(d);OGATE,XP(F)::QAR1(A),XP(d)
- Refutation
- S(b);
- Try
- R(J);
- Threat
- R1(J),XP(d)
- Vars
- S(b);OGATE,XP(D)::B(C),XS(b)
- P(d);SBLOCK,XP(F)::QAB(A)
- P(d);::R1(J)
- Refutation
- B(g);
- Try
- P(F);XP(d)
- Threat
- R(E)
- Vars
- S(b);OGATE,XP(D)::B(C),XS(b)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Threat
- QAB(A)+R(J)
- Vars
- K(c);OGATEB,P-FLIGHT,XP(F)::R1(E)
- P(d);SBLOCK,XP(F)::QAB(A)+R(J)
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).