MESON Chess Problem Database

Problem Display
PID: 227857 (8/8/8/8/2K3p1/R5N1/3k3p/7R w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

8/8/8/8/2K3p1/R5N1/3k3p/7R

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Ra2#
  • Tries
    • 1.Se4+?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke2!
    • 1.Sf5?
      • threat
        • 2.Ra2#
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke2!
    • 1.Raa1?
      • 1...Kc2
        • 2.Ra2#
        • 2.Rxh2#
      • 1...Ke3!
    • 1.Re3?
      • threat
        • 2.Re2#
      • 1...Kc2
        • 2.Re2#
      • 1...Kxe3!
    • 1.Rf3?
      • 1...Kc2
        • 2.Rf2#
      • 1...gxf3!
    • 1.Ra4?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke3!
    • 1.Ra5?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke3!
    • 1.Ra6?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke3!
    • 1.Ra7?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke3!
    • 1.Ra8?
      • 1...Kc2
        • 2.Ra2#
      • 1...Ke3!
  • Keys
    • 1.Rxh2+!
      • 1...Kc1
        • 2.Ra1#
      • 1...Kd1
        • 2.Ra1#
      • 1...Ke1
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • 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);
      • Threat
        • R(B)
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • 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)
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(c);XR(B)
    • 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
  • Actual
    • R(A);CHECK,XP(b)
    • Vars
      • K(a);S_FLIGHT::R(B)
      • K(a);P-FLIGHT::R(B)
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