MESON Chess Problem Database

Problem Display
PID: 135705 (1BB5/5q2/7p/2RP4/4k1P1/2PN3N/3QPb2/3K3n w - - 0 1)

Hirschenson, Aaron

Comm., The Problemist, 2010

1BB5/5q2/7p/2RP4/4k1P1/2PN3N/3QPb2/3K3n

#2

11 + 5

56 The Problemist 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qf4#
    • 1...Qh5
      • 2.Qf4#
    • 1...Qe6
      • 2.Qf4#
    • 1...Qg6
      • 2.Qf4#
    • 1...Qe8
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qg8
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qf4
      • 2.Qxf4#
    • 1...Qf5
      • 2.Bxf5#
    • 1...Qa7
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qb7
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qc7
      • 2.Bf5#
    • 1...Qd7
      • 2.Qf4#
    • 1...Qe7
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qg7
      • 2.Bf5#
      • 2.Qf4#
    • 1...Qh7
      • 2.Qf4#
    • 1...Bxc5
      • 2.Sxc5#
    • 1...h5
      • 2.Sg5#
  • Tries
    • 1.Sdxf2+?
      • 1...Qxf2
        • 2.Qd3#
      • 1...Sxf2+!
    • 1.Rc4+?
      • 1...Bd4
        • 2.Rxd4#
      • 1...Kxd5!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qd3#
      • 1...Qxd5
        • 2.Bf5#
      • 1...Qc7
        • 2.Qf4#
      • 1...Qf3
        • 2.exf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(e);N_GUARD,XP(I)::QAR1(B)
    • Q(e);N_GUARD::QAR1(B)
    • Q(e);N_GUARD::QAR1(B),XQ(e)
    • Q(e);N_GUARD::B(K),XQ(e)
    • Q(e);N_GUARD::B(K)
    • B(b);XR(H)::S(E),XB(b)
    • P(d);N_GUARD::S(F)
  • Tries
    • Try
      • S(E);CHECK,XB(b)
      • Vars
        • Q(e);XS(E)::QAB1(B)
      • Refutation
        • S(a);CHECK,XS(E)
    • Try
      • R(H);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::R1(H),XB(b)
      • Refutation
        • K(c);S_FLIGHT,XP(I)
  • Actual
    • S(E);
    • Threat
      • QAB1(B)
    • Vars
      • Q(e);N_GUARD,P_PINQ(B),XP(I)::B(K)
      • Q(e);N_GUARD::QAR1(B)
      • Q(e);OGATE,P_PINP(C)::P(C),XQ(e)
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