MESON Chess Problem Database
Problem Display
PID: 90782 (nB6/2qpp3/1p2p3/1R1PkPpN/1Q3pB1/K1P5/8/8 w - - 0 1)
Haring, Jacobus
Die Schwalbe, 1964
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd6
- 2.dxe6#
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...d6
- 2.Qd4#
- 1...Qd6
- Tries
- 1.Ka2?
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...Qd6
- 2.Qd4#
- 2.dxe6#
- 1...d6
- 2.Qd4#
- 1...f3!
- 1...Qxb8
- 1.Kb2?
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...Qd6
- 2.Qd4#
- 2.dxe6#
- 1...d6
- 2.Qd4#
- 1...f3!
- 1...Qxb8
- 1.Kb3?
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...Qd6
- 2.Qd4#
- 2.dxe6#
- 1...d6
- 2.Qd4#
- 1...f3!
- 1...Qxb8
- 1.Ka4?
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...Qd6
- 2.Qd4#
- 2.dxe6#
- 1...d6
- 2.Qd4#
- 1...f3!
- 1...Qxb8
- 1.Bh3?
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Qxe7#
- 1...exf5
- 2.Qxe7#
- 1...g4
- 2.Qxf4#
- 1...Qd6
- 2.dxe6#
- 1...d6
- 2.Qd4#
- 1...f3!
- 1...Qxb8
- 1.Bxc7+?
- 1...d6
- 2.Qd4#
- 2.dxe6#
- 1...Sxc7!
- 1...d6
- 1.Ka2?
- Keys
- 1.Bf3!
- 1...Kxf5
- 2.Qe4#
- 1...Qxb8
- 2.d6#
- 1...exd5
- 2.Rxd5#
- 1...exf5
- 2.Qxe7#
- 1...Qd6
- 2.dxe6#
- 1...g4
- 2.Qxf4#
- 1...d6
- 2.Qe4#
- 1...Kxf5
- 1.Bf3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(f);P_PINQ(C),S_CUTP(g)::R(E)+P(F),XP(e)
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Refutation
- P(a);
- Try
- K(A);P-FLIGHT
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Refutation
- P(a);
- Try
- K(A);P-FLIGHT
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Refutation
- P(a);
- Try
- B(D);
- Vars
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATEB,P_SPINP(e),XP(F)::QAR2(C),XP(h)
- P(e);OGATEB,XP(G)::QAR2(C),XP(h)
- P(c);N_GUARD::QAB1(C),XP(a)
- Q(f);P_PINQ(C),S_CUTP(g)::R(E)+P(F),XP(e)
- P(g);N_SPINQ(f),SBLOCK::QAB1(C)
- Refutation
- P(a);
- Try
- B(I);CHECK,XQ(f)
- Refutation
- S(i);XB(I)
- Try
- Actual
- B(D);
- Vars
- K(b);N_SPINQ(f),P-FLIGHT,XP(G)::QAB1(C)
- Q(f);N_GUARD,N_SPINQ(f),XB(I)::R(E)+P(F)
- P(e);OGATE,P_SPINP(e),XP(F)::R1(E),XP(e)
- P(e);OGATEB,SBLOCK,XP(G)::QAR2(C),XP(h)
- Q(f);P_PINQ(C),S_CUTP(g)::R(E)+P(F),XP(e)
- P(c);N_GUARD::QAB1(C),XP(a)
- P(g);N_SPINQ(f),SBLOCK::QAR1(C)
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).