MESON Chess Problem Database

Problem Display
PID: 234712 (7K/8/8/5N2/3p4/1Q2N2k/6p1/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2012

7K/8/8/5N2/3p4/1Q2N2k/6p1/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qh5#
        • 2.Qh7#
      • 1...dxe3
        • 2.Qh5#
      • 1...Kh2!
    • 1.Qb7?
      • threat
        • 2.Qxg2#
        • 2.Qh7#
      • 1...Kh2
        • 2.Qxg2#
      • 1...g1Q
        • 2.Qh7#
      • 1...g1S
        • 2.Qh1#
        • 2.Qg2#
        • 2.Qh7#
      • 1...g1B
        • 2.Qg2#
        • 2.Qh7#
      • 1...g1R
        • 2.Qh7#
      • 1...dxe3!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qh7#
        • 2.Qxg2#
        • 2.Qg3#
      • 1...Kh2
        • 2.Qxg2#
      • 1...dxe3
        • 2.Qg3#
      • 1...g1Q
        • 2.Qh7#
      • 1...g1S
        • 2.Qh7#
        • 2.Qg2#
        • 2.Qg3#
      • 1...g1B
        • 2.Qh7#
        • 2.Qg2#
        • 2.Qg3#
      • 1...g1R
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(B)::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(A),XP(a)
        • P(a);::QAR(A)
      • Refutation
        • P(c);XS(B)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR1(A),XP(a)
      • P(c);XS(B)::QAR1(A)
      • P(a);::QAR(A)
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