MESON Chess Problem Database

Problem Display
PID: 263030 (7R/7K/5p1B/6pk/Q7/8/8/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Sp. Prize, SuperProblem, 2018

7R/7K/5p1B/6pk/Q7/8/8/8

#2

4 + 3

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Kg7?
      • 1...g4
        • 2.Bc1#
        • 2.Bd2#
        • 2.Be3#
        • 2.Bf4#
      • 1...f5!
    • 1.Bxg5?
      • threat
        • 2.Qh4#
      • 1...fxg5
        • 2.Kg7#
      • 1...Kxg5!
    • 1.Qd1+?
      • 1...g4
        • 2.Qh1#
      • 1...Kh4!
    • 1.Qe4?
      • 1...g4
        • 2.Qh1#
      • 1...f5!
    • 1.Qf4?
      • 1...g4
        • 2.Qh2#
      • 1...f5
        • 2.Qxg5#
      • 1...gxf4!
  • Keys
    • 1.Rg8!
      • 1...g4
        • 2.Qxg4#
      • 1...f5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Refutation
        • P(c);
    • Try
      • B(B);XP(a)
      • Threat
        • QAR1(A)
      • Vars
        • P(c);SBLOCK,XB(B)::R(D)+K(C)
      • Refutation
        • K(b);P-FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Vars
        • P(a);P_SPINP(a),SBLOCK::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);SBLOCK::QAR(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • P(a);SBLOCK::QAR(A)
        • P(c);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • R(D);
    • Vars
      • P(a);::QAB1(A),XP(a)
      • P(c);N_GUARD::R1(D),XP(a)
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