MESON Chess Problem Database

Problem Display
PID: 257533 (8/3Kp3/8/1p1kp3/1Q6/5P2/3N1b2/8 w - - 0 1)

Shpakovsky, Aleksandr Nikolaevich

Astafyeva-30 JT (Kudesnik), 2021

8/3Kp3/8/1p1kp3/1Q6/5P2/3N1b2/8

#2

4 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qe4#
    • 1...e6
      • 2.Qd6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Bd4!
    • 1.Qxb5+?
      • 1...Bc5
        • 2.Qc4#
      • 1...Kd4!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sc3#
      • 1...Be1
        • 2.Qc5#
      • 1...Bd4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);SBLOCK::QAB1(C)
    • P(e);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • P(d);::QAB1(C),XP(d)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK,XP(b)
      • Vars
        • B(a);P_SPINB(a)::QAB1(C)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(a);N_GUARD::QAR1(C)
      • B(a);SBLOCK::QAB(C)
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