MESON Chess Problem Database

Problem Display
PID: 240159 (BNQ2b2/2Pr2n1/r5p1/pRN1nkP1/q2pR3/8/2p3P1/2B4K w - - 0 1)

Zilahi, Zoltan

Schakend Nederland, 1971

BNQ2b2/2Pr2n1/r5p1/pRN1nkP1/q2pR3/8/2p3P1/2B4K

#2

11 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.g4#
    • 1...Sf3
      • 2.g4#
    • 1...Sc4
      • 2.g4#
    • 1...Sc6
      • 2.g4#
    • 1...Sf7
      • 2.g4#
  • Tries
    • 1.Qxf8+?
      • 1...Rf6
        • 2.Qxf6#
      • 1...Sf7
        • 2.g4#
      • 1...Rf7!
  • Keys
    • 1.Se6!
      • threat
        • 2.Rbxe5#
      • 1...Kxe6
        • 2.Qxd7#
      • 1...Qxb5
        • 2.Sxd4#
      • 1...Rxe6
        • 2.g4#
      • 1...Bc5
        • 2.Sxg7#
      • 1...Rd5
        • 2.Rf4#
      • 1...Bd6
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(e);N_GUARD::P(C)
  • Tries
    • Try
      • Q(K);CHECK,N_PINR(i),XB(k)
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAR1(K),XR(g)
        • S(e);P_SPINS(e)::P(C)
      • Refutation
        • R(i);P_SPINR(i)
  • Actual
    • S(F);N_PINR(i),P_PINS(e)
    • Threat
      • R1(E),XS(e)
    • Vars
      • K(f);OGATEB,P_SPINR(i),S_FLIGHT,XS(F)::QAB1(K),XR(i)
      • Q(b);N_GUARD,N_SPINS(e),XR(E)::S(F),XP(c)
      • R(g);SBLOCK,XS(F)::P(C)
      • B(k);N_GUARD,N_SPINS(e)::S(F),XS(j)
      • R(i);N_SPINS(e)::R1(D)
      • B(k);N_GUARD::S(F),XS(j)
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