MESON Chess Problem Database

Problem Display
PID: 231118 (8/1B6/4N3/1k2P3/1N6/KR6/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

8/1B6/4N3/1k2P3/1N6/KR6/8/8

#2

6 + 1

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Ba6#
    • 1...Ka5
      • 2.Sc6#
    • 1...Kb6
      • 2.Sc6#
  • Tries
    • 1.Sc2+?
      • 1...Kc4
        • 2.Se3#
      • 1...Ka5!
    • 1.Sd3+?
      • 1...Kc4
        • 2.Sb2#
      • 1...Ka5!
    • 1.Sd5+?
      • 1...Kc4
        • 2.Se3#
        • 2.Sb6#
      • 1...Ka5!
    • 1.Bc8?
      • 1...Kc4
        • 2.Ba6#
      • 1...Ka5
        • 2.Sc6#
      • 1...Kb6!
    • 1.Rb1?
      • 1...Ka5
        • 2.Sc6#
      • 1...Kb6
        • 2.Sc6#
      • 1...Kc4!
    • 1.Rb2?
      • 1...Ka5
        • 2.Sc6#
      • 1...Kb6
        • 2.Sc6#
      • 1...Kc4!
  • Keys
    • 1.Sc6+!
      • 1...Kc4
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(a);S_FLIGHT::B(F)
    • K(a);P-FLIGHT::S(C)
    • K(a);P-FLIGHT::R(B)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);P-FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::S(C)
        • K(a);P-FLIGHT::R(B)+S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::S(C)
        • K(a);P-FLIGHT::R(B)+S(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);CHECK
    • Vars
      • K(a);S_FLIGHT::S(C)
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