MESON Chess Problem Database

Problem Display
PID: 234720 (8/8/8/3R4/2K1k3/1Q2p2p/6P1/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2013

8/8/8/3R4/2K1k3/1Q2p2p/6P1/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Qf3#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Qc2#
        • 2.Qb1#
        • 2.Qd3#
      • 1...e2
        • 2.Qd3#
        • 2.Qf3#
      • 1...Kxf5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qf3#
        • 2.Qg4#
        • 2.Qd4#
      • 1...Kf4
        • 2.Qf3#
      • 1...hxg2
        • 2.Qg4#
      • 1...e2
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAB1(B)
  • Tries
    • Try
      • R(D);
      • Threat
        • DUALS(3)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);P-FLIGHT::QAR1(B)
      • P(b);XP(A)::QAR2(B)
      • P(a);::QAR1(B)
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