MESON Chess Problem Database

Problem Display
PID: 61244 (4b1N1/8/Q2pp2K/2RnrkPp/8/1n3N1P/6B1/4R3 w - - 0 1)

Hirschenson, Aaron

Navon, Emanuel

StrateGems, 2005

4b1N1/8/Q2pp2K/2RnrkPp/8/1n3N1P/6B1/4R3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Sh4#
      • 2.Se7#
  • Tries
    • 1.Qd3+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Kf4!
    • 1.Qc4?
      • threat
        • 2.Sh4#
      • 1...Rxe1
        • 2.Se7#
      • 1...Re4
        • 2.Qxe4#
      • 1...Re2
        • 2.Se7#
      • 1...Re3
        • 2.Se7#
      • 1...h4
        • 2.Sxh4#
        • 2.Qg4#
      • 1...Sd4!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Qxe5#
      • 1...Kf4
        • 2.Qxe5#
      • 1...Rxe1
        • 2.Sh4#
      • 1...Re2
        • 2.Sh4#
      • 1...Re3
        • 2.Sh4#
      • 1...Re4
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c),P_SPINS(b)::QAB1(G),XR(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • S(C)
      • Vars
        • R(c);P_SPINS(b),XR(A)::S(I)
        • R(c);N_GUARD,P_SPINS(b)::QAB1(G),XR(c)
        • R(c);P_SPINS(b)::S(I)
      • Refutation
        • S(a);
  • Actual
    • Q(G);XP(f)
    • Threat
      • QAR1(G),XR(c)
    • Vars
      • K(d);P-FLIGHT,P_SPINR(c)::QAB1(G),XR(c)
      • R(c);P_SPINS(b),XR(A)::S(C)
      • R(c);P_SPINS(b)::S(C)
      • R(c);P_SPINS(b)::S(I)
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