MESON Chess Problem Database

Problem Display
PID: 234704 (4k3/4b3/1p4K1/2N1Q3/6R1/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2012

4k3/4b3/1p4K1/2N1Q3/6R1/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qb8#
    • 1...Kf8
      • 2.Qh8#
  • Tries
    • 1.Ra4?
      • threat
        • 2.Ra8#
      • 1...Kd8
        • 2.Ra8#
        • 2.Qb8#
      • 1...Kf8
        • 2.Qh8#
      • 1...bxc5!
    • 1.Rh4?
      • threat
        • 2.Rh8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Rh8#
        • 2.Qh8#
      • 1...bxc5!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qb8#
        • 2.Qh8#
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qh8#
      • 1...bxc5
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);XS(B)
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(a);XS(B)
  • Actual
    • R(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);N_SPINB(b),P-FLIGHT::QAR2(C)
      • P(a);XS(B)::QAR1(C),XB(b)
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