MESON Chess Problem Database

Problem Display
PID: 15905 (Nn2b3/1P2Pp2/R1BkpQ2/2rPnP2/2P1P1p1/3N4/4K3/8 w - - 0 1)

Hoffmann, Fritz

Die Schwalbe, 1989

Nn2b3/1P2Pp2/R1BkpQ2/2rPnP2/2P1P1p1/3N4/4K3/8

#2

12 + 8

1106 Rochade Europa 2003

SOLUTION

  • SOUND
  • Tries
    • 1.Bxe8+?
      • 1...Rc6
        • 2.c5#
      • 1...Sec6
        • 2.e5#
      • 1...Sbc6
        • 2.b8Q#
        • 2.b8B#
      • 1...Sxa6!
    • 1.dxe6?
      • threat
        • 2.exf7#
      • 1...Rxc6
        • 2.c5#
      • 1...Bxc6
        • 2.e8S#
      • 1...Sbxc6
        • 2.b8Q#
        • 2.b8B#
      • 1...fxe6
        • 2.Qxe6#
      • 1...Bd7
        • 2.exd7#
      • 1...Sed7
        • 2.exd7#
      • 1...Sbd7
        • 2.exd7#
      • 1...Sexc6!
  • Keys
    • 1.fxe6!
      • threat
        • 2.exf7#
      • 1...Rxc6
        • 2.c5#
      • 1...Bxc6
        • 2.e8S#
      • 1...Sexc6
        • 2.e5#
      • 1...Sbxc6
        • 2.b8Q#
        • 2.b8B#
      • 1...fxe6
        • 2.Qxe6#
      • 1...Bd7
        • 2.exd7#
      • 1...Sed7
        • 2.exd7#
      • 1...Sbd7
        • 2.exd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);CHECK,XB(h)
      • Vars
        • R(b);OGATE,P_SPINR(b)::P(C)
        • S(c);OGATE,P_SPINS(c)::P(D)
        • S(g);OGATE,P_SPINS(g)::P=Q
      • Refutation
        • S(g);XR(G)
    • Try
      • P(E);XP(e)
      • Threat
        • QAR(I)+P(E),XP(f)
      • Vars
        • R(b);OGATE,P_SPINR(b),XB(H)::P(C)
        • B(h);OGATE,P_SPINB(h),XB(H)::P=S
        • S(g);OGATE,P_SPINS(g),XB(H)::P=Q
        • P(f);OGATE,P_SPINP(f),XP(E)::QAR1(I),XP(f)
        • B(h);OGATE::QAR(I)+P(E),XB(h)
        • S(c);OGATE::QAR(I)+P(E),XS(c)
        • S(g);OGATE::QAR(I)+P(E),XS(g)
      • Refutation
        • S(c);P_SPINS(c),XB(H)
  • Actual
    • P(F);XP(e)
    • Threat
      • QAR(I)+P(F),XP(f)
    • Vars
      • R(b);OGATE,P_SPINR(b),XB(H)::P(C)
      • B(h);OGATE,P_SPINB(h),XB(H)::P=S
      • S(c);OGATE,P_SPINS(c),XB(H)::P(D)
      • S(g);OGATE,P_SPINS(g),XB(H)::P=Q
      • P(f);OGATE,P_SPINP(f),XP(F)::QAR1(I),XP(f)
      • B(h);OGATE::QAR(I)+P(F),XB(h)
      • S(c);OGATE::QAR(I)+P(F),XS(c)
      • S(g);OGATE::QAR(I)+P(F),XS(g)
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