MESON Chess Problem Database

Problem Display
PID: 227691 (1R1N4/kp1N4/8/1K6/8/8/8/8 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1926

1R1N4/kp1N4/8/1K6/8/8/8/8

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Sc6#
  • Tries
    • 1.Ka5?
      • 1...b5
        • 2.Sc6#
      • 1...b6+!
    • 1.Sc5?
      • 1...b6
        • 2.Sc6#
      • 1...Kxb8!
    • 1.Se5?
      • 1...b6
        • 2.Sec6#
        • 2.Sdc6#
      • 1...Kxb8!
    • 1.Sf6?
      • 1...b6
        • 2.Sc6#
      • 1...Kxb8!
    • 1.Sf8?
      • 1...b6
        • 2.Sc6#
      • 1...Kxb8!
  • Keys
    • 1.Rxb7+!
      • 1...Ka8
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::S(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(b);N_GUARD::S(D)
      • Refutation
        • P(b);CHECK
    • Try
      • S(B);
      • Vars
        • P(b);N_GUARD::S(D)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Vars
        • P(b);N_GUARD::S(D)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • S(B);
      • Vars
        • P(b);N_GUARD::S(D)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • R(C);CHECK,XP(b)
    • Vars
      • K(a);P-FLIGHT::S(B)
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