MESON Chess Problem Database

Problem Display
PID: 259089 (2B1N3/B7/2P2N1K/4kpR1/4q1p1/2rpn1P1/3b2b1/Q3R3 w - - 0 1)

Kovacs, F

Western Morning News, 1923

(First published on Sat Apr 7 1923)

2B1N3/B7/2P2N1K/4kpR1/4q1p1/2rpn1P1/3b2b1/Q3R3

#2

10 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Rxf5#
    • 1...Qxc6
      • 2.Rxf5#
    • 1...Qa4
      • 2.Rxf5#
    • 1...Qb4
      • 2.Rxf5#
    • 1...Qc4
      • 2.Rxf5#
    • 1...Qd4
      • 2.Rxf5#
    • 1...Sd5
      • 2.Sxg4#
  • Tries
    • 1.Bd4+?
      • 1...Qxd4
        • 2.Rxf5#
      • 1...Kxd4!
    • 1.Qxc3+?
      • 1...Qd4
        • 2.Bxd4#
        • 2.Bb8#
        • 2.Rxf5#
        • 2.Qxd4#
      • 1...Bxc3!
    • 1.Qa5+?
      • 1...Qd5
        • 2.Rxf5#
      • 1...Sd5
        • 2.Sxg4#
        • 2.Qxd5#
      • 1...Rc5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb8#
      • 1...Qxc6
        • 2.Rxf5#
      • 1...Qd5
        • 2.Rxf5#
      • 1...Qb4
        • 2.Rxf5#
      • 1...Qd4
        • 2.Rxf5#
      • 1...Sc4
        • 2.Qb5#
      • 1...Sd5
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(f);N_GUARD,P_SPINS(e)::R1(D),XP(i)
    • Q(f);N_GUARD,P_PINS(F),P_SPINS(e),XP(E)::R1(D),XP(i)
    • Q(f);N_GUARD,N_SPINR(c),P_SPINS(e)::R1(D),XP(i)
    • S(e);N_GUARD,P_PINR(D),P_SPINQ(f),SBLOCK::S(F),XP(g)
  • Tries
    • Try
      • B(H);CHECK,N_PINR(c)
      • Vars
        • Q(f);P_SPINS(e),SBLOCK,XB(H)::R1(D),XP(i)
      • Refutation
        • K(h);N_SPINP(i),P_SPINR(c),S_FLIGHT,XB(H)
    • Try
      • Q(A);CHECK,XR(c)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);CHECK,N_PINR(c)
      • Vars
        • Q(f);P_SPINQ(f),P_SPINS(e)::R1(D),XP(i)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(f);N_GUARD,P_PINS(F),P_SPINS(e),XP(E)::R1(D),XP(i)
      • Q(f);N_GUARD,P_SPINS(e)::R1(D),XP(i)
      • Q(f);N_GUARD,N_SPINR(c),P_SPINS(e)::R1(D),XP(i)
      • S(e);N_GUARD,P_PINR(D),P_SPINQ(f)::QAR(A)
      • S(e);N_GUARD,P_PINR(D),P_SPINQ(f),SBLOCK::S(F),XP(g)
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