MESON Chess Problem Database

Problem Display
PID: 239661 (2R2K2/b7/r1pk1N2/2n2Ppb/1Qn1pP2/3N2B1/Bp1q4/3R4 w - - 0 1)

Pituk, Alexander

Nepszava, 1941

2R2K2/b7/r1pk1N2/2n2Ppb/1Qn1pP2/3N2B1/Bp1q4/3R4

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qxc5#
    • 1...Bb8
      • 2.Qxc5#
      • 2.Qxb8#
    • 1...Sa3
      • 2.Qd4#
    • 1...Se3
      • 2.fxg5#
    • 1...Sa5
      • 2.Qd4#
    • 1...Se5
      • 2.Qd4#
      • 2.fxe5#
    • 1...Sb6
      • 2.Qxc5#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Scxe4#
        • 2.Sb7#
      • 1...Bxc5
        • 2.Qb8#
      • 1...e3
        • 2.Sce4#
        • 2.Sb7#
      • 1...gxf4!
    • 1.Sxe4+?
      • 1...Kd5
        • 2.Qxc4#
      • 1...Kd7!
    • 1.fxg5+?
      • 1...Se5
        • 2.Bxe5#
        • 2.Qd4#
      • 1...Qf4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sxc4#
      • 1...Sxe5
        • 2.fxe5#
      • 1...Be2
        • 2.Sf7#
      • 1...Bf7
        • 2.Sxf7#
      • 1...Sa3
        • 2.Sxe4#
        • 2.Rxd2#
      • 1...Se3
        • 2.Sxe4#
      • 1...Sa5
        • 2.Sxe4#
        • 2.Rxd2#
      • 1...Sb6
        • 2.Sxe4#
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(h);S_CUTB(k)::QAB1(E),XS(e)
    • S(c);OGATE::QAR2(E)
    • S(c);N_GUARD,S_CUTQ(b)::B(D)+P(F),XP(f)
    • S(c);S_CUTB(k)::QAB1(E),XS(e)
  • Tries
    • Try
      • S(C);P_PINQ(b),XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • B(k);N_GUARD,P_SPINB(k),SBLOCK,XS(C)::QAB(E)
      • Refutation
        • P(f);P_SPINP(f),XP(F)
    • Try
      • S(H);CHECK,XP(d)
      • Vars
        • K(j);N_SPINS(e),P-FLIGHT,P_SPINS(c)::QAB1(E),XS(c)
      • Refutation
        • K(j);N_SPINS(e),P-FLIGHT
    • Try
      • P(F);CHECK,XP(f)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • S(C);P_PINQ(b)
    • Threat
      • S(C),XS(c)
    • Vars
      • S(c);OGATE,XS(C)::P(F),XS(c)
      • B(g);N_GUARD::S(C)
      • B(g);N_GUARD::S(C),XB(g)
      • S(c);::S(H),XP(d)
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