MESON Chess Problem Database

Problem Display
PID: 206729 (8/8/8/5p2/2R2R2/4k3/8/4BK2 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1925

8/8/8/5p2/2R2R2/4k3/8/4BK2

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Rc3#
  • Tries
    • 1.Bd2+?
      • 1...Kd3
        • 2.Rfd4#
      • 1...Kxd2!
    • 1.Rc1?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rc2?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rc5?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rc6?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rc7?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rc8?
      • 1...Kd3
        • 2.Rc3#
      • 1...Kxf4!
    • 1.Rfd4?
      • 1...Kf3
        • 2.Rc3#
        • 2.Rd3#
      • 1...f4!
    • 1.Rh4?
      • threat
        • 2.Rc3#
        • 2.Rh3#
      • 1...Kd3
        • 2.Rc3#
      • 1...Kf3
        • 2.Rc3#
        • 2.Rh3#
      • 1...f4!
  • Keys
    • 1.Bf2+!
      • 1...Kd2
        • 2.Rfd4#
      • 1...Kd3
        • 2.Rfd4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R1(C)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(D)
      • Refutation
        • K(a);S_FLIGHT,XB(A)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::R1(C)
      • Refutation
        • P(b);
  • Actual
    • B(A);CHECK
    • Vars
      • K(a);S_FLIGHT::R(D)
      • K(a);P-FLIGHT::R1(D)
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