MESON Chess Problem Database

Problem Display
PID: 199542 (2B5/5K2/8/8/1B4q1/7k/5Q2/6n1 w - - 0 1)

Voronin, Vladimir

Zadachi i Etyudi, 2015

2B5/5K2/8/8/1B4q1/7k/5Q2/6n1

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5+
      • 2.Bxf5#
    • 1...Qe6+
      • 2.Bxe6#
    • 1...Qd7+
      • 2.Bxd7#
  • Tries
    • 1.Be1?
      • threat
        • 2.Qg3#
      • 1...Qf5+
        • 2.Bxf5#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...Qd7+
        • 2.Bxd7#
      • 1...Se2!
    • 1.Qg2+?
      • 1...Kh4
        • 2.Qxg4#
      • 1...Kxg2!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qg3#
        • 2.Qh2#
      • 1...Qf5+
        • 2.Bxf5#
      • 1...Qe6+
        • 2.Bxe6#
      • 1...Qd7+
        • 2.Bxd7#
      • 1...Qxc8
        • 2.Qg3#
      • 1...Se2
        • 2.Qh2#
      • 1...Sf3
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(c);CHECK,OGATEB::B(D),XQ(c)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(c);CHECK,OGATEB::B(D),XQ(c)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_SPINQ(c),P-FLIGHT::QAR1(A),XQ(c)
      • Refutation
        • K(b);N_SPINQ(c),S_FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,OGATEB::B(D),XQ(c)
      • Q(c);N_SPINQ(c),XB(D)::QAR1(A)
      • S(a);::QAR1(A)
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