MESON Chess Problem Database

Problem Display
PID: 77803 (6R1/4NK2/7b/7p/4pk1p/7Q/8/8 w - - 0 1)

Anonymous

The Tablet, 1952

6R1/4NK2/7b/7p/4pk1p/7Q/8/8

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Sg6#
    • 1...e3
      • 2.Qf5#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Sd5#
      • 1...e3
        • 2.Qf5#
      • 1...Bg7!
    • 1.Rg1?
      • threat
        • 2.Sg6#
      • 1...e3
        • 2.Qf5#
      • 1...Ke5!
    • 1.Rg2?
      • threat
        • 2.Sg6#
      • 1...e3
        • 2.Qf5#
      • 1...Ke5!
    • 1.Qf1+?
      • 1...Ke5
        • 2.Qf6#
      • 1...Ke3!
  • Keys
    • 1.Rg5!
      • threat
        • 2.Rf5#
      • 1...Kxg5
        • 2.Qf5#
      • 1...Bxg5
        • 2.Sg6#
      • 1...e3
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::S(B)
    • P(a);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • S(B)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • B(e);
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(D);
      • Threat
        • S(B)
      • Vars
        • P(a);SBLOCK::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(b);S_FLIGHT,XR(D)::QAR1(A)
      • B(e);SBLOCK,XR(D)::S(B)
      • P(a);SBLOCK::QAR1(A)
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