MESON Chess Problem Database

Problem Display
PID: 157547 (8/4p2R/5k2/4N3/4KB2/4P3/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1926

8/4p2R/5k2/4N3/4KB2/4P3/8/8

#2

5 + 2

5454 Near Snap 2016
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Rh6#
    • 1...e6
      • 2.Rf7#
  • Tries
    • 1.Kd5?
      • threat
        • 2.Rf7#
      • 1...Kf5
        • 2.Rf7#
      • 1...e6+!
    • 1.Bg5+?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kxg5!
    • 1.Bh6?
      • 1...e6
        • 2.Rf7#
      • 1...Ke6!
    • 1.Rg7?
      • threat
        • 2.Rg6#
      • 1...Ke6
        • 2.Rg6#
      • 1...e6
        • 2.Rf7#
      • 1...Kxg7!
  • Keys
    • 1.Bg3!
      • 1...Kg5
        • 2.Bh4#
      • 1...Ke6
        • 2.Rh6#
      • 1...e6
        • 2.Bh4#

This anticipates 104670(1946), 121219(2003)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(E)
    • P(b);SBLOCK::R1(E)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(E)
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • P(b);CHECK
    • Try
      • B(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT,XB(C)
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::R1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • K(a);P-FLIGHT::R(E)
        • P(b);SBLOCK::R1(E)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);P-FLIGHT::R(E)
      • P(b);SBLOCK::B(C)
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