MESON Chess Problem Database

Problem Display
PID: 79860 (1b2r1N1/1P2p1PP/RPP1kpK1/8/2pQ1pP1/1P6/B3P3/1N2R3 w - - 0 1)

Witt, Andreas

Badische Neueste Nachrichten, 1994

1b2r1N1/1P2p1PP/RPP1kpK1/8/2pQ1pP1/1P6/B3P3/1N2R3

#2

15 + 7

6114 Problemschach-Jahrbuch (1994) 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.bxc8Q#
      • 2.bxc8B#
    • 1...Rf8
      • 2.gxf8S#
    • 1...Rxg8
      • 2.hxg8Q#
      • 2.hxg8B#
    • 1...Be5
      • 2.Qd7#
    • 1...cxb3
      • 2.Bxb3#
    • 1...c3
      • 2.b4#
    • 1...f5
      • 2.gxf5#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Qd5#
        • 2.Qd7#
      • 1...Bd6
        • 2.Qxc4#
        • 2.Qd5#
      • 1...Rd8!
  • Keys
    • 1.c7!
      • 1...Rxg8
        • 2.hxg8Q#
        • 2.hxg8B#
      • 1...Bxc7
        • 2.bxc7#
      • 1...cxb3
        • 2.Bxb3#
      • 1...Rd8
        • 2.cxd8S#
      • 1...Rc8
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Rf8
        • 2.gxf8S#
      • 1...Ba7
        • 2.bxa7#
      • 1...c3
        • 2.b4#
      • 1...f3
        • 2.exf3#
      • 1...f5
        • 2.gxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(g);OGATE::PXR(g)=Q
    • R(g);OGATE::PXR(g)=S
    • R(g);OGATE,P_PINP(M),XS(O)::PXR(g)=Q
    • B(f);SBLOCK::QAB1(F)
    • P(a);OGATE,P_SPINP(a),XP(E)::B(C),XP(a)
    • P(a);::B(C)+P(E)
    • P(d);OGATE::P(G),XP(d)
  • Tries
    • Try
      • R(H);
      • Threat
        • DUALS(2)
      • Refutation
        • R(g);
  • Actual
    • P(J);
    • Vars
      • R(g);OGATE,P_PINP(M),XS(O)::PXR(g)=Q
      • B(f);OGATE,XP(J)::R(H)+P(I),XB(f)
      • P(a);OGATE,P_SPINP(a),XP(E)::B(C),XP(a)
      • R(g);OGATE::PXR(g)=S
      • R(g);OGATE::PXR(g)=Q
      • B(f);OGATE::R(H)+P(I),XB(f)
      • P(a);::B(C)+P(E)
      • P(b);OGATE::R(B)+P(D),XP(b)
      • P(d);OGATE::P(G),XP(d)
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