MESON Chess Problem Database

Problem Display
PID: 152105 (8/3n2K1/3pp3/R2Bk1n1/5p2/2N5/5B1Q/8 w - - 0 1)

Alaikov, Venelin

Shakhmatna misl, 1969

8/3n2K1/3pp3/R2Bk1n1/5p2/2N5/5B1Q/8

#2

6 + 6

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qxg5#
      • 1...Kf5
        • 2.Be4#
      • 1...exd5
        • 2.Qxd5#
      • 1...Sh3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sf7
        • 2.Qe4#
      • 1...Sh7
        • 2.Qe4#
      • 1...Sf3!
    • 1.Qh5?
      • threat
        • 2.Qxg5#
      • 1...Kf5
        • 2.Be4#
      • 1...exd5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qxg5#
      • 1...Kf5
        • 2.Bxe6#
      • 1...exd5
        • 2.Rxd5#
      • 1...Sf3
        • 2.Qxe6#
      • 1...Sh3
        • 2.Qxe6#
      • 1...Se4
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qxe6#
      • 1...Sh7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);N_PINP(a)
      • Threat
        • QAR2(B),XS(c)
      • Vars
        • K(b);P-FLIGHT::R(D)+B(E),DCHECK
        • P(e);OGATE,P_SPINP(e),XB(E)::QAR1(B),XP(e)
        • S(c);N_GUARD::QAR1(B)
        • S(c);N_GUARD::QAR1(B),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(B);N_PINP(a),P_PINS(c)
      • Threat
        • QAR2(B),XS(c)
      • Vars
        • K(b);P-FLIGHT::R(D)+B(E),DCHECK
      • Refutation
        • P(e);P_SPINP(e),XB(E)
  • Actual
    • Q(B);N_PINP(a)
    • Threat
      • QAR2(B),XS(c)
    • Vars
      • K(b);P-FLIGHT::R(D)+B(E),DCHECK,XP(e)
      • P(e);OGATE,P_SPINP(e),XB(E)::R1(D),XP(e)
      • S(c);N_GUARD::QAR1(B),XP(e)
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