MESON Chess Problem Database

Problem Display
PID: 241830 (4k2K/3p2RN/3P4/8/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1930

4k2K/3p2RN/3P4/8/8/8/8/8

#2

4 + 2

15148 Sadier Collection 2021
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Rg8#
  • Tries
    • 1.Sf6+?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf8!
    • 1.Rg1?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rg2?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rg3?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rg4?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rg5?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rg6?
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf7!
    • 1.Rf7?
      • threat
        • 2.Rf8#
      • 1...Kd8
        • 2.Rf8#
      • 1...Kxf7!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Rg8#
      • 1...Kd8
        • 2.Rg8#
      • 1...Kf8
        • 2.Rg8#

Anticipated by 227479(1926)

FEATURES

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