MESON Chess Problem Database

Problem Display
PID: 141451 (3R2r1/4B1p1/K2npP2/4k3/4b2N/1N4p1/2P1R2P/b5Q1 w - - 0 1)

Ersek, Tibor

Die Schwalbe, 2010

3R2r1/4B1p1/K2npP2/4k3/4b2N/1N4p1/2P1R2P/b5Q1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qxg3#
    • 1...Kd5
      • 2.Qc5#
    • 1...Sc4
      • 2.Qxg3#
    • 1...Sb5
      • 2.Qxg3#
    • 1...Sf5
      • 2.Sg6#
    • 1...Sb7
      • 2.Qxg3#
    • 1...Sf7
      • 2.Qxg3#
    • 1...Sc8
      • 2.Qxg3#
    • 1...Se8
      • 2.Qxg3#
  • Tries
    • 1.Sg6+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf5!
    • 1.Bxd6+?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kxf6!
    • 1.c4?
      • threat
        • 2.Qxg3#
      • 1...Kf4
        • 2.Qxg3#
      • 1...gxh2
        • 2.Qxh2#
        • 2.Qg3#
      • 1...gxf6
        • 2.Bxd6#
      • 1...Sf5
        • 2.Sg6#
      • 1...g2!
  • Keys
    • 1.hxg3!
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sb7
        • 2.Qxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(d);N_SPINB(c),S_FLIGHT::QAB1(A),XP(b)
    • K(d);N_SPINB(c),P-FLIGHT,P_SPINS(e)::QAR1(A)
    • S(e);::QAB(A),XP(b)
    • S(e);SBLOCK::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);N_SPINB(c),P-FLIGHT,P_SPINS(e)::QAR1(A)
      • Refutation
        • K(d);N_SPINB(c),P-FLIGHT
    • Try
      • B(I);CHECK,XS(e)
      • Vars
        • K(d);N_SPINB(c),P-FLIGHT::QAR1(A)
      • Refutation
        • K(d);N_SPINB(c),S_FLIGHT,XP(H)
    • Try
      • P(B);
      • Threat
        • QAB(A),XP(b)
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT::QAB1(A),XP(b)
        • P(g);SBLOCK,XP(H)::B(I),XS(e)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(b);
  • Actual
    • P(D);XP(b)
    • Threat
      • QAR2(A)
    • Vars
      • K(d);N_SPINB(c),P-FLIGHT,P_SPINS(e)::QAR1(A)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • S(e);::QAB(A),XB(a)
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