MESON Chess Problem Database

Problem Display
PID: 6642 (8/8/K3p3/2kpQ3/R1N5/8/8/8 w - - 0 1)

Neukomm, Gyula (Julius) R

Onitiu, Valerian

Magyar Sakkvilag, 1932

8/8/K3p3/2kpQ3/R1N5/8/8/8

#2

4 + 3

273 Mat Plus 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qd6#
  • Tries
    • 1.Ra3?
      • 1...Kxc4
        • 2.Qc3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Kb4!
    • 1.Rb4?
      • 1...Kc6
        • 2.Qd6#
      • 1...Kxb4!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qb6#
      • 1...Kd4
        • 2.Qe3#
      • 1...dxc4
        • 2.Rxc4#
      • 1...d4
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);N_SPINP(b),OGATEB,P-FLIGHT,XS(B)::QAR1(C)
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XR(A)
  • Actual
    • Q(C);N_PINP(b),XP(c)
    • Threat
      • QAB1(C)
    • Vars
      • K(a);S_FLIGHT::QAB1(C)
      • P(b);OGATE,XS(B)::R1(A),XP(b)
      • P(b);::QAB1(C)
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