MESON Chess Problem Database

Problem Display
PID: 227479 (8/8/1NK5/k7/8/1R6/1P6/8 w - - 0 1)

Szasz, Lajos

Magyar Sakkvilag, 1926

8/8/1NK5/k7/8/1R6/1P6/8

#2

4 + 1

6490 yacpdb 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Ra3#
  • Tries
    • 1.Sc4+?
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka4!
    • 1.Sd7?
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka4!
    • 1.Sa8?
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka4!
    • 1.Sc8?
      • 1...Ka6
        • 2.Ra3#
      • 1...Ka4!
    • 1.Rc3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Rd3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Re3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Rf3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Rg3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Rh3?
      • 1...Ka6
        • 2.Ra3#
      • 1...Kb4!
    • 1.Rb4?
      • threat
        • 2.Ra4#
      • 1...Ka6
        • 2.Ra4#
      • 1...Kxb4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Ra3#
      • 1...Ka4
        • 2.Ra3#
      • 1...Ka6
        • 2.Ra3#

This anticipates 241830(1930)

FEATURES

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