MESON Chess Problem Database

Problem Display
PID: 235797 (Bb2Kn2/5pq1/3PpPpN/2p1kpB1/4p3/1P4P1/2P5/3Q1R1r w - - 0 1)

Basisty, Mark Borisovich

Zamanov, Vidadi

Variantim, 2016

Bb2Kn2/5pq1/3PpPpN/2p1kpB1/4p3/1P4P1/2P5/3Q1R1r

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf6
      • 2.Bf4#
    • 1...Qh8
      • 2.Sxf7#
    • 1...Bxd6
      • 2.Qa1#
    • 1...f4
      • 2.gxf4#
  • Tries
    • 1.Ke7?
      • threat
        • 2.Bf4#
        • 2.Qa1#
      • 1...Qxf6+
        • 2.Bxf6#
      • 1...Bxd6+
        • 2.Qxd6#
      • 1...Qxh6
        • 2.Qa1#
      • 1...Rh4
        • 2.Qa1#
      • 1...c4
        • 2.Bf4#
      • 1...f4
        • 2.Bxf4#
        • 2.Qa1#
        • 2.gxf4#
      • 1...Rxf1!
    • 1.Bc1?
      • threat
        • 2.Bb2#
      • 1...Kxf6
        • 2.Sg4#
      • 1...c4!
    • 1.Rxf5+?
      • 1...exf5
        • 2.Qd5#
      • 1...gxf5!
    • 1.fxg7?
      • threat
        • 2.Sxf7#
      • 1...f4
        • 2.gxf4#
      • 1...f6
        • 2.Sf7#
        • 2.Bf4#
      • 1...Rxh6!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Bc3#
      • 1...Kd4
        • 2.Qa1#
      • 1...Kxd6
        • 2.Bf4#
      • 1...Kxf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(i);SBLOCK,XP(H)::B(F)
    • Q(i);N_GUARD::S(I),XP(h)
    • B(j);SBLOCK,XP(G)::QAB(A)
    • P(e);OGATE::P(E),XP(e)
  • Tries
    • Try
      • K(K);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);CHECK,OGATE,XP(H)::B(F),XQ(i)
        • B(j);CHECK,OGATE,XP(G)::QAB1(A),XB(j)
        • Q(i);XS(I)::QAB(A)
        • R(a);::QAB(A)
        • P(c);::B(F)
      • Refutation
        • R(a);XR(B)
    • Try
      • B(F);
      • Threat
        • B(F)
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT,XP(H)::S(I)
      • Refutation
        • P(c);
    • Try
      • R(B);CHECK,XP(e)
      • Vars
        • P(f);XR(B)::QAR1(A)
      • Refutation
        • P(g);XR(B)
    • Try
      • P(H);XQ(i)
      • Threat
        • S(I),XP(h)
      • Vars
        • P(e);OGATE::P(E),XP(e)
      • Refutation
        • R(a);XS(I)
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • K(d);S_FLIGHT,XP(G)::QAR(A)+B(F),DCHECK
      • K(d);P_SPINP(e),S_FLIGHT,XP(H)::S(I)
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