MESON Chess Problem Database

Problem Display
PID: 234607 (4n3/3p1R2/8/2P1k3/8/1Q3K2/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2002

4n3/3p1R2/8/2P1k3/8/1Q3K2/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe3#
  • Tries
    • 1.Rf5+?
      • 1...Kd4
        • 2.Rd5#
      • 1...Kxf5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sf6
        • 2.Re7#
      • 1...d5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR2(A)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(D)
      • Refutation
        • K(a);P-FLIGHT,XR(D)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • S(c);N_GUARD::QAB1(A),XS(c)
      • S(c);SBLOCK::R(D)
      • P(b);SBLOCK::QAR2(A)
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