MESON Chess Problem Database

Problem Display
PID: 79267 (8/3K4/8/2p5/2k5/3pQ1B1/8/1R6 w - - 0 1)

Andrievski, Y

Rabotschi krai, 1981

8/3K4/8/2p5/2k5/3pQ1B1/8/1R6

#2

4 + 3

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd3#
  • Tries
    • 1.Bf4?
      • 1...Kc3
        • 2.Qxc5#
      • 1...Kd5
        • 2.Qxd3#
      • 1...d2!
    • 1.Rb3?
      • threat
        • 2.Qxd3#
      • 1...Kd5
        • 2.Qxd3#
      • 1...d2
        • 2.Qd3#
      • 1...Kxb3!
    • 1.Qd2?
      • 1...Kd5
        • 2.Qxd3#
      • 1...Kd4!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qxc5#
      • 1...Kc3
        • 2.Qc1#
      • 1...Kd5
        • 2.Qe6#
      • 1...d2
        • 2.Qb3#

Anticipated by 12130(1975)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR2(B),XP(a)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B),XP(c)
        • K(b);S_FLIGHT::QAR2(B),XP(a)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR2(B),XP(a)
        • P(a);::QAB1(B)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XR(A)
    • Try
      • Q(B);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAR2(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
  • Actual
    • B(C);
    • Threat
      • QAR1(B),XP(c)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAR2(B)
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);OGATE::QAB1(B)
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