MESON Chess Problem Database

Problem Display
PID: 235417 (1b1R4/Q2B4/2p5/1qnb2R1/1Pnk1N1K/1Pp3B1/1P1N1P2/8 w - - 0 1)

Pituk, Alexander

Source?, 1948

1b1R4/Q2B4/2p5/1qnb2R1/1Pnk1N1K/1Pp3B1/1P1N1P2/8

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Qxc5#
    • 1...Qa6
      • 2.Qxc5#
    • 1...Qb7
      • 2.Qxc5#
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sf3#
        • 2.Se2#
        • 2.Se6#
      • 1...Ke5
        • 2.Qg7#
      • 1...Bxf4
        • 2.Sf3#
      • 1...Bxa7
        • 2.Sf3#
        • 2.Se2#
      • 1...Sxb2
        • 2.Sf3#
        • 2.Se6#
      • 1...Sxd2
        • 2.Se6#
      • 1...cxb2
        • 2.Se2#
      • 1...cxd2
        • 2.Se2#
        • 2.Se6#
      • 1...Qb6
        • 2.Sf3#
        • 2.Se2#
      • 1...Bd6
        • 2.Se2#
      • 1...Sa3
        • 2.Sf3#
        • 2.Se6#
      • 1...Se3
        • 2.Sf3#
        • 2.Se6#
      • 1...Sa5
        • 2.Sf3#
        • 2.Se6#
      • 1...Se5
        • 2.Se6#
      • 1...Sb6
        • 2.Sf3#
      • 1...Sd6
        • 2.Qg7#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • Q(d);N_GUARD::QAB1(J),XS(e)
  • Actual
    • B(K);P_PINB(f)
    • Threat
      • DUALS(3)
    • Vars
      • K(c);N_SPINB(f),N_SPINS(e),S_FLIGHT::QAB(J)
      • B(h);XS(G)::S(B)
      • S(b);XS(B)::S(G)
      • P(a);XP(A)::S(G)
      • B(h);N_SPINB(f)::S(G)
      • S(b);::S(G)
      • S(b);N_SPINS(e)::S(B)
      • S(b);N_GUARD,N_SPINB(f),S_CUTB(h)::QAB(J)
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