MESON Chess Problem Database

Problem Display
PID: 77638 (2K5/3R1p2/Nb2k3/6Q1/8/8/8/8 w - - 0 1)

Lewis, Robert Tony

The Problemist, 1977

2K5/3R1p2/Nb2k3/6Q1/8/8/8/8

#2

4 + 3

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Sc7#
    • 1...Bf2
      • 2.Sc7#
    • 1...Be3
      • 2.Sc7#
    • 1...Bd4
      • 2.Sc7#
    • 1...Ba5
      • 2.Sc5#
    • 1...Bc5
      • 2.Sxc5#
      • 2.Sc7#
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Sc5#
      • 2.Sxc7#
    • 1...Bd8
      • 2.Sc5#
    • 1...f5
      • 2.Qe7#
    • 1...f6
      • 2.Qd5#
  • Keys
    • 1.Qf4!
      • 1...f5
        • 2.Qd6#
      • 1...Bg1
        • 2.Sc7#
      • 1...Bf2
        • 2.Sc7#
      • 1...Be3
        • 2.Sc7#
      • 1...Bd4
        • 2.Sc7#
      • 1...Ba5
        • 2.Sc5#
      • 1...Bc5
        • 2.Sxc5#
        • 2.Sc7#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Sc5#
        • 2.Sxc7#
      • 1...Bd8
        • 2.Sc5#
      • 1...f6
        • 2.Qe4#

This anticipates 229380(2004)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(B)
    • P(c);SBLOCK::QAR1(A)
    • P(c);SBLOCK::QAB1(A)
  • Actual
    • Q(A);
    • Vars
      • P(c);SBLOCK::QAR1(A)
      • B(a);N_GUARD::S(B)
      • P(c);SBLOCK::QAR2(A)
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