MESON Chess Problem Database

Problem Display
PID: 203388 (8/3B4/K3p3/2Pk4/1P1pp2r/8/1BN1Q3/8 w - - 0 1)

Sokolenko, TA

Shakhmaty, 1924

8/3B4/K3p3/2Pk4/1P1pp2r/8/1BN1Q3/8

#2

7 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Se3#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Bxe6#
      • 1...Ke5
        • 2.Qg5#
      • 1...d3
        • 2.Se3#
      • 1...e5
        • 2.Se3#
      • 1...e3!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qxd4#
      • 1...Kc4
        • 2.Bxe6#
      • 1...Ke5
        • 2.Qg5#
      • 1...dxe3
        • 2.Sxe3#
      • 1...d3
        • 2.Qd4#
      • 1...e5
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::S(B)
  • Tries
    • Try
      • Q(C);P_PINP(a)
      • Threat
        • QAR1(C),XP(a)
      • Vars
        • K(d);N_SPINP(a),S_FLIGHT::B(G),XP(e)
        • K(d);P-FLIGHT::QAR2(C)
        • P(a);::S(B)
        • P(e);SBLOCK::S(B)
      • Refutation
        • P(b);
  • Actual
    • Q(C);
    • Threat
      • QAR1(C),XP(a)
    • Vars
      • K(d);S_FLIGHT::B(G),XP(e)
      • K(d);P-FLIGHT,P_SPINP(a)::QAR2(C)
      • P(a);XQ(C)::S(B),XP(a)
      • P(a);::QAR1(C)
      • P(e);SBLOCK::QAB(C)
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