MESON Chess Problem Database

Problem Display
PID: 232290 (2K1R3/2NP4/p2Bp1pQ/r1R3n1/2bnk2b/2PpNp1q/B2P4/8 w - - 0 1)

Bunka, Vladislav

Freie Presse, 1992

2K1R3/2NP4/p2Bp1pQ/r1R3n1/2bnk2b/2PpNp1q/B2P4/8

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qxh4#
    • 1...Bb5
      • 2.Bd5#
    • 1...Bd5
      • 2.Bxd5#
    • 1...Sf7
      • 2.Qf4#
    • 1...Sh7
      • 2.Qf4#
  • Tries
    • 1.Qxh4+?
      • 1...Qg4
        • 2.Qxg4#
      • 1...Qxh4!
    • 1.Qxg6+?
      • 1...Sf5
        • 2.Rxc4#
      • 1...Qf5!
  • Keys
    • 1.Sxe6!
      • threat
        • 2.Sxg5#
      • 1...Rxc5+
        • 2.Sxc5#
      • 1...Qxe6
        • 2.Qxh4#
      • 1...Bxe6
        • 2.Bd5#
      • 1...Sdxe6
        • 2.Rxc4#
      • 1...Sgxe6
        • 2.Qf4#
      • 1...Sf7
        • 2.Sg5#
        • 2.Qf4#
      • 1...Sh7
        • 2.Sg5#
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::QAR(G),XB(g)
    • B(d);OGATE::B(A)
    • B(d);OGATE::B(A),XB(d)
    • S(i);OGATE::QAR1(G)
  • Tries
    • Try
      • Q(G);CHECK,XB(g)
      • Vars
        • Q(c);N_GUARD,P_SPINQ(c)::QAR2(G),XQ(c)
      • Refutation
        • Q(c);XQ(G)
    • Try
      • Q(G);CHECK,XP(l)
      • Vars
        • S(e);P_SPINS(e),S_CUTQ(c),S_CUTR(h)::R(E),XB(d)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • S(H);XP(k)
    • Threat
      • R(K)+S(H),DCHECK,XS(i)
    • Vars
      • R(h);CHECK,XR(E)::R(K)+S(H),DCHECK,XR(h)
      • Q(c);N_GUARD,P_PINP(I),P_SPINQ(c),XS(H)::QAR(G),XB(g)
      • B(d);OGATE,P_PINP(I),P_SPINB(d),XS(H)::B(A)
      • S(e);OGATEB,P_SPINS(e),XS(H)::R(E),XB(d)
      • S(i);OGATE,P_SPINS(i),XS(H)::QAR1(G)
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