MESON Chess Problem Database

Problem Display
PID: 159206 (2b5/8/knQ3BR/2B5/1Kn5/8/8/8 w - - 0 1)

Abdullayev, Elmar

ChessStar, 2015

2b5/8/knQ3BR/2B5/1Kn5/8/8/8

#2

5 + 4

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qxb6#
    • 1...Sd2
      • 2.Qxb6#
    • 1...Sa3
      • 2.Qxb6#
    • 1...Se3
      • 2.Qxb6#
    • 1...Sa5
      • 2.Qxb6#
    • 1...Se5
      • 2.Qxb6#
    • 1...Sd6
      • 2.Qxb6#
  • Tries
    • 1.Bd3?
      • threat
        • 2.Qa8#
        • 2.Qxb6#
      • 1...Be6
        • 2.Qxb6#
      • 1...Bb7
        • 2.Qa4#
        • 2.Qxb6#
      • 1...Ka7!
    • 1.Rh7?
      • threat
        • 2.Qb5#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sa3
        • 2.Qxb6#
      • 1...Sd6
        • 2.Qxb6#
      • 1...Bd7!
    • 1.Qxc8+?
      • 1...Ka7
        • 2.Rh7#
      • 1...Sxc8!
  • Keys
    • 1.Be4!
      • threat
        • 2.Qa8#
      • 1...Ka7
        • 2.Qa8#
      • 1...Be6
        • 2.Qb7#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sd6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::QAR1(C),XS(c)
  • Tries
    • Try
      • B(D);N_PINS(c),P_PINS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);::QAR1(C),XS(c)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT,P_SPINS(c)
    • Try
      • R(E);
      • Threat
        • QAB1(C)
      • Vars
        • B(d);N_GUARD::QAB1(C),XB(d)
        • S(a);N_GUARD::QAR1(C),XS(c)
      • Refutation
        • B(d);
    • Try
      • Q(C);CHECK,N_PINS(c),XB(d)
      • Vars
        • K(b);P-FLIGHT,P_SPINS(c)::R(E)
      • Refutation
        • S(c);XQ(C)
  • Actual
    • B(D);
    • Threat
      • QAR2(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • B(d);N_GUARD::QAB1(C)
      • B(d);N_GUARD::QAB1(C),XB(d)
      • S(a);N_GUARD::QAR1(C),XS(c)
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