MESON Chess Problem Database

Problem Display
PID: 227697 (8/8/8/3B4/8/2k5/1R2K3/B7 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1926

8/8/8/3B4/8/2k5/1R2K3/B7

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rb5#
  • Tries
    • 1.Kd1?
      • threat
        • 2.Rb3#
      • 1...Kd3
        • 2.Rb3#
      • 1...Kd4!
    • 1.Bh1?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
    • 1.Bg2?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
    • 1.Bf3?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
    • 1.Bc6?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
    • 1.Bb7?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
    • 1.Ba8?
      • 1...Kd4
        • 2.Rc2#
      • 1...Kc4!
  • Keys
    • 1.Rb1+!
      • 1...Kc2
        • 2.Be4#

FEATURES

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