MESON Chess Problem Database

Problem Display
PID: 221877 (8/3p4/1Q2p3/3k4/R7/7K/2P5/8 w - - 0 1)

Belchikov, Nikolai Ivanovich

SuperProblem 181. TT, 2017

8/3p4/1Q2p3/3k4/R7/7K/2P5/8

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qb5#
  • Tries
    • 1.Kg4?
      • 1...Ke5
        • 2.Qd4#
      • 1...d6
        • 2.Qb5#
      • 1...e5!
    • 1.Rg4?
      • 1...e5
        • 2.c4#
      • 1...d6
        • 2.Qb5#
      • 1...Ke5!
    • 1.Rh4?
      • 1...e5
        • 2.c4#
      • 1...d6
        • 2.Qb5#
      • 1...Ke5!
    • 1.Ra5+?
      • 1...Kc4
        • 2.Qc5#
      • 1...Ke4!
  • Keys
    • 1.Rf4!
      • 1...Ke5
        • 2.Qd4#
      • 1...e5
        • 2.c4#
      • 1...d6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(D)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
        • P(c);SBLOCK::QAR2(D)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • P(b);SBLOCK::P(A)
        • P(c);SBLOCK::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);
      • Vars
        • P(b);SBLOCK::P(A)
        • P(c);SBLOCK::QAR2(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT::QAB1(D)
      • P(b);SBLOCK::P(A)
      • P(c);SBLOCK::QAR2(D)
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