MESON Chess Problem Database

Problem Display
PID: 79161 (2K5/8/8/8/6n1/7N/5b2/5QBk w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Problemist Pribuzhya, 1992

2K5/8/8/8/6n1/7N/5b2/5QBk

#2

4 + 3

5454 Near Snap 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qf3#
    • 1...Bxg1
      • 2.Qxg1#
    • 1...Be3
      • 2.Qf3#
    • 1...Bg3
      • 2.Qf3#
    • 1...Bd4
      • 2.Qf3#
    • 1...Bh4
      • 2.Qf3#
    • 1...Bc5
      • 2.Qf3#
    • 1...Bb6
      • 2.Qf3#
    • 1...Ba7
      • 2.Qf3#
    • 1...Sh2
      • 2.Sxf2#
    • 1...Se3
      • 2.Sxf2#
    • 1...Se5
      • 2.Sxf2#
    • 1...Sf6
      • 2.Sxf2#
    • 1...Sh6
      • 2.Sxf2#
  • Tries
    • 1.Bh2+?
      • 1...Bg1
        • 2.Qxg1#
      • 1...Kxh2!
    • 1.Qxf2?
      • threat
        • 2.Qf3#
      • 1...Sh2
        • 2.Qxh2#
      • 1...Se3
        • 2.Qh2#
      • 1...Se5
        • 2.Qh2#
      • 1...Sxf2!
  • Keys
    • 1.Kb7!
      • 1...Bxg1
        • 2.Qxg1#
      • 1...Be1
        • 2.Qf3#
      • 1...Be3
        • 2.Qf3#
      • 1...Bg3
        • 2.Qf3#
      • 1...Bd4
        • 2.Qf3#
      • 1...Bh4
        • 2.Qf3#
      • 1...Bc5
        • 2.Qf3#
      • 1...Bb6
        • 2.Qf3#
      • 1...Ba7
        • 2.Qf3#
      • 1...Sh2
        • 2.Sxf2#
      • 1...Se3
        • 2.Sxf2#
      • 1...Se5
        • 2.Sxf2#
      • 1...Sf6
        • 2.Sxf2#
      • 1...Sh6
        • 2.Sxf2#

Anticipated by 178321(1928), 96595(1972)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE::QAB(A)
    • B(b);OGATE,P_SPINB(b),XB(B)::QAR1(A),XB(b)
    • S(c);N_GUARD::S(C),XB(b)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::QAR1(A),XB(b)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(A);XB(b)
      • Threat
        • QAB(A)
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
        • S(c);N_GUARD::QAR1(A)
      • Refutation
        • S(c);XQ(A)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • B(b);OGATE,P_SPINB(b),XB(B)::QAR1(A),XB(b)
      • B(b);OGATE::QAB(A)
      • S(c);N_GUARD::S(C),XB(b)
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