MESON Chess Problem Database

Problem Display
PID: 180780 (1Bq5/1B3b2/3Qp1PN/2RPP3/2N1k3/2b1P1p1/1nP1K3/8 w - - 0 1)

Popa, Nicolae

Sachmatija, 2017

1Bq5/1B3b2/3Qp1PN/2RPP3/2N1k3/2b1P1p1/1nP1K3/8

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.dxe6#
    • 1...Qf8
      • 2.dxe6#
    • 1...Qg8
      • 2.dxe6#
    • 1...Qh8
      • 2.dxe6#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bd4
      • 2.Sd2#
    • 1...Bxe5
      • 2.Sd2#
      • 2.Qxe5#
    • 1...Sd3
      • 2.cxd3#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qh4#
      • 1...Qxd8
        • 2.d6#
      • 1...Bxe5
        • 2.Sd2#
      • 1...Sd3
        • 2.cxd3#
      • 1...exd5!
    • 1.dxe6+?
      • 1...Qc6
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...Qxb7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qh4#
      • 1...Bxe5
        • 2.Sd2#
      • 1...exd5
        • 2.Sd6#
      • 1...Qd8
        • 2.d6#
      • 1...Sd3
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(g);N_GUARD::B(K)+P(F),XP(e)
    • B(b);N_GUARD::S(D),XB(b)
    • B(b);N_GUARD::S(D)
    • S(a);OGATE::P(A),XS(a)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR(H)
      • Vars
        • Q(g);N_GUARD,XQ(H)::B(K)+P(F)
        • B(b);N_GUARD,XP(G)::S(D)
        • S(a);OGATE::P(A),XS(a)
      • Refutation
        • P(e);P_SPINP(e),XP(F)
    • Try
      • P(F);CHECK,XP(e)
      • Refutation
        • Q(g);XB(K)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)
    • Vars
      • B(b);N_GUARD,XP(G)::S(D)
      • P(e);P_SPINP(e),XP(F)::S(D)
      • Q(g);N_GUARD::B(K)+P(F)
      • S(a);OGATE::P(A),XS(a)
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