MESON Chess Problem Database
Problem Display
PID: 89921 (4Nr2/6qB/4pPp1/1PPkp1NR/3P4/3p2P1/6K1/Q1R3b1 w - - 0 1)
Maleika, Gerhard
Die Schwalbe, 1972
#2
12 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qxf6
- 2.Sc7#
- 1...Qh6
- 2.Sc7#
- 1...Qh8
- 2.Sc7#
- 1...Qc7
- 2.Sxc7#
- 1...Qg8
- 2.Sc7#
- 1...Bxd4
- 2.Qa2#
- 1...gxh5
- 2.Be4#
- 1...Qxf6
- Tries
- 1.Sf3?
- threat
- 2.Rxe5#
- 1...Ke4
- 2.Rxe5#
- 1...Qxf6
- 2.Qa8#
- 1...Bxd4
- 2.Qxd4#
- 1...gxh5
- 2.Qa2#
- 1...g5
- 2.Qa2#
- 1...Qc7!
- threat
- 1.Qa8+?
- 1...Kxd4
- 2.Qe4#
- 1...Qb7!
- 1...Kxd4
- 1.Sf3?
- Keys
- 1.Sf7!
- threat
- 2.Rxe5#
- 1...Ke4
- 2.Rxe5#
- 1...Qxf6
- 2.Sxf6#
- 1...Bxd4
- 2.Qa8#
- 1...gxh5
- 2.Sc7#
- 1...g5
- 2.Sc7#
- threat
- 1.Sf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- Q(g);N_GUARD,XP(J)::S(L)
- Q(g);N_GUARD::S(L)
- Q(g);N_GUARD::S(L),XQ(g)
- B(a);SBLOCK,XP(E)::QAB(A)
- P(f);OGATE,XR(I)::B(K)
- Tries
- Try
- S(H);P_PINP(d)
- Threat
- R1(I),XP(d)
- Vars
- K(c);N_SPINP(d),P_SPINP(f),S_FLIGHT::R1(I),XP(d)
- Q(g);N_GUARD,XP(J)::QAB(A)
- B(a);OGATE,XP(E)::QAR1(A),XB(a)
- P(f);N_SPINP(d),P_PINP(D),XR(I)::QAB(A)
- P(f);N_SPINP(d)::QAB(A)
- Refutation
- Q(g);
- Try
- Q(A);CHECK
- Vars
- K(c);OGATE,P-FLIGHT,XP(E)::QAR1(A)
- Refutation
- Q(g);P_SPINQ(g)
- Try
- Actual
- S(H);P_PINP(d)
- Threat
- R1(I),XP(d)
- Vars
- K(c);N_SPINP(d),P_SPINP(f),S_FLIGHT::R1(I),XP(d)
- Q(g);XP(J)::S(L),XQ(g)
- B(a);SBLOCK,XP(E)::QAB(A)
- P(f);N_SPINP(d),P_PINP(D),XR(I)::S(L)
- P(f);N_SPINP(d)::S(L)
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).