MESON Chess Problem Database

Problem Display
PID: 17312 (1b3q2/1P5Q/1B4r1/1n3n2/b1B1k1Np/2pNpR1K/4r1P1/8 w - - 0 1)

Shahaf, Eliahu (formerly Feigin, Eliahu)

1st Sp. Prize, BCPS 058. Ty., 1946

1b3q2/1P5Q/1B4r1/1n3n2/b1B1k1Np/2pNpR1K/4r1P1/8

#2

9 + 11

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Rf4#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Ba7
      • 2.Rf4#
    • 1...Sbd6
      • 2.Rf4#
    • 1...Sc7
      • 2.Rf4#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qd5#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qd6
        • 2.Qxf5#
      • 1...Qf7
        • 2.Sc5#
      • 1...Qd8
        • 2.Sc5#
        • 2.Qxf5#
      • 1...Qg8
        • 2.Sc5#
        • 2.Qxf5#
      • 1...Rd6
        • 2.Rf4#
      • 1...Bd6
        • 2.Qc6#
      • 1...Sbd6
        • 2.Rf4#
      • 1...Sc7
        • 2.Rf4#
      • 1...Sfd6
        • 2.Qc6#
      • 1...Se7
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • R(i);P_SPINS(h),S_CUTB(j)::R1(C)
    • B(j);N_GUARD::R1(C),XB(j)
    • B(j);N_GUARD::R1(C)
    • S(g);S_CUTB(j)::R1(C)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • Q(k);N_GUARD::S(B),XQ(k)
      • Q(k);N_GUARD::QAB1(I),XS(h)
      • Q(k);N_GUARD::S(B)
      • R(i);S_CUTB(j)::R1(C)
      • B(j);S_CUTR(i)::QAB(I)
      • S(g);S_CUTB(j)::R1(C)
      • S(h);S_CUTR(i)::QAB(I)
      • S(h);S_CUTQ(k)::S(B)
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