MESON Chess Problem Database
Problem Display
PID: 51399 (3n3Q/3pp1N1/3Nq3/R2PkBP1/2K2pP1/2P5/8/8 w - - 0 1)
Morra, Juan Carlos
Manchester Guardian, 1959
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxd6
- 2.Se8#
- 1...Qxd5+
- 2.Rxd5#
- 1...Qxf5
- 2.Sgxf5#
- 1...Qxd6
- 2.Se6#
- 1...f3
- 2.Qh2#
- 1...exd6
- 2.Sxe6#
- 1...Kxd6
- Tries
- 1.Kd3?
- threat
- 2.Sc4#
- 1...Qxf5+
- 2.Sgxf5#
- 1...Kxd6
- 2.Se8#
- 1...Qxd6
- 2.Se6#
- 1...exd6
- 2.Sxe6#
- 1...f3
- 2.Qh2#
- 1...Qxd5+!
- threat
- 1.Kd3?
- Keys
- 1.Kb3!
- threat
- 2.Sc4#
- 1...Kxd6
- 2.Se8#
- 1...Qxf5
- 2.Sgxf5#
- 1...Qxd6
- 2.Se6#
- 1...exd6
- 2.Sxe6#
- 1...f3
- 2.Qh2#
- threat
- 1.Kb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- K(b);S_FLIGHT,XS(H)::S(I)
- Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::R1(D),XQ(c)
- Q(c);N_PINP(E),XB(F)::QAB(J)+S(I),XQ(c)
- Q(c);N_PINP(E),SBLOCK,XS(H)::QAB(J)+S(I)
- P(a);OGATEB::QAB(J)
- P(e);SBLOCK,XS(H)::QAB(J)+S(I),XQ(c)
- Tries
- Try
- K(B);N_SPINP(E),S_FLIGHT
- Threat
- S(H)
- Vars
- Q(c);CHECK,XB(F)::QAB(J)+S(I),XQ(c)
- K(b);S_FLIGHT,XS(H)::S(I)
- Q(c);P_PINP(E),SBLOCK,XS(H)::QAB(J)+S(I)
- P(e);SBLOCK,XS(H)::QAB(J)+S(I),XQ(c)
- P(a);OGATEB::QAB(J)
- Refutation
- Q(c);CHECK,P_SPINQ(c),XP(E)
- Try
- Actual
- K(B);S_FLIGHT
- Threat
- S(H)
- Vars
- K(b);S_FLIGHT,XS(H)::S(I)
- Q(c);N_PINP(E),XB(F)::QAB(J)+S(I),XQ(c)
- Q(c);N_PINP(E),SBLOCK,XS(H)::QAB(J)+S(I)
- P(e);SBLOCK,XS(H)::QAB(J)+S(I),XQ(c)
- P(a);OGATEB::QAB(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).