MESON Chess Problem Database

Problem Display
PID: 144427 (nb4K1/7p/4NRR1/2QPk1N1/2p3Pn/2P5/3q1rb1/2B4B w - - 0 1)

Zilahi, Zoltan

Magyar Sakkvilag, 1931

nb4K1/7p/4NRR1/2QPk1N1/2p3Pn/2P5/3q1rb1/2B4B

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.cxd4#
    • 1...Bf1
      • 2.Sf7#
    • 1...Bh3
      • 2.Sf7#
    • 1...Be4
      • 2.Sf7#
    • 1...Bxd5
      • 2.Sf7#
    • 1...Sf3
      • 2.Rf5#
  • Tries
    • 1.d6+?
      • 1...Bd5
        • 2.Sf7#
      • 1...Qd5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Qe7#
      • 1...Qxd5+
        • 2.Re6#
      • 1...Bxd5+
        • 2.Sf7#
      • 1...Qxc3
        • 2.Re6#
      • 1...Qxf4
        • 2.Re6#
      • 1...Rxf4
        • 2.Re6#
      • 1...Sxg6
        • 2.Rf5#
      • 1...Sf5
        • 2.Rxf5#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Sc7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • Q(a);OGATE::P(C),XQ(a)
    • B(c);::S(G)
    • B(c);P_PINS(H),P_SPINB(c),XP(F)::S(G)
    • S(e);N_GUARD,S_CUTR(b)::R1(I)
  • Tries
    • Try
      • P(F);CHECK
      • Vars
        • B(c);P_PINS(H),P_SPINB(c)::S(G)
      • Refutation
        • Q(a);P_PINS(H),P_SPINQ(a)
  • Actual
    • S(H);
    • Threat
      • QAR2(E)
    • Vars
      • Q(a);CHECK,P_SPINQ(a),XP(F)::R1(I)
      • B(c);CHECK,P_SPINB(c),XP(F)::S(G)
      • Q(a);XP(C)::R1(I)
      • Q(a);XS(H)::R1(I)
      • R(b);SBLOCK,XS(H)::R1(I)
      • S(e);N_GUARD,XR(J)::R1(I)
      • S(e);N_GUARD::R1(I),XS(e)
      • B(i);N_GUARD::QAB1(E),XB(i)
      • S(h);S_CUTB(i)::QAB1(E)
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