MESON Chess Problem Database

Problem Display
PID: 10266 (3K4/7B/2Qpb3/1Np1r3/RB4p1/R2Pk1p1/3pppPN/5r2 w - - 0 1)

Schiffmann, Israel Abraham

Faszinierendes Schachproblem, 1963

3K4/7B/2Qpb3/1Np1r3/RB4p1/R2Pk1p1/3pppPN/5r2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bxd2#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rf5
      • 2.Qe4#
    • 1...Rg5
      • 2.Qe4#
    • 1...Rh5
      • 2.Qe4#
  • Tries
    • 1.Sxg4+?
      • 1...Kf4
        • 2.Bxd2#
      • 1...Bxg4!
    • 1.Bxc5+?
      • 1...Rxc5
        • 2.Re4#
        • 2.Qe4#
      • 1...dxc5!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Qxe5#
      • 1...Kf4
        • 2.Bxd2#
      • 1...Re4
        • 2.Qxg3#
      • 1...Rd5
        • 2.d4#
      • 1...Rf5
        • 2.Sxg4#
      • 1...Rg5
        • 2.Qxg3#
      • 1...Rh5
        • 2.Qxg3#
      • 1...Bd5
        • 2.Bxc5#
      • 1...Bf5
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::R(E)+B(F),DCHECK,XP(b)
    • R(i);N_GUARD::QAR1(H),XR(i)
    • R(i);N_GUARD::QAR1(H)
  • Tries
    • Try
      • S(B);CHECK,XP(g)
      • Vars
        • K(e);S_FLIGHT::R(E)+B(F),DCHECK,XP(b)
      • Refutation
        • B(k);XS(B)
    • Try
      • B(F);CHECK,XP(h)
      • Refutation
        • P(j);XB(F)
  • Actual
    • Q(H);XP(j)
    • Threat
      • QAR2(H),XR(i)
    • Vars
      • K(e);P_SPINR(i),S_FLIGHT::R(E)+B(F),DCHECK,XP(b)
      • R(i);OGATE::QAR2(H),XP(f)
      • R(i);P_PINQ(H),S_CUTB(k)::R(C)+P(D)
      • R(i);S_CUTB(k)::S(B),XP(g)
      • B(k);S_CUTR(i)::B(F),XP(h)
      • B(k);OGATE::QAB(H)
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