MESON Chess Problem Database

Problem Display
PID: 45415 (8/8/1bp3bq/Np2Q3/1B6/1Bpkp1p1/KR3PR1/1n3N2 w - - 0 1)

Retter, Yosef

1st Prize, Israel Ring Ty., 1968

8/8/1bp3bq/Np2Q3/1B6/1Bpkp1p1/KR3PR1/1n3N2

#2

9 + 10

3772 FIDE Album (1965-1967) 1976
3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...exf2
      • 2.Bc2#
    • 1...e2
      • 2.Bc2#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qf5+?
      • 1...Kd4
        • 2.Sxc6#
      • 1...Bxf5!
    • 1.fxe3?
      • threat
        • 2.Bc2#
      • 1...Bxa5
        • 2.Qd4#
      • 1...Bf7
        • 2.Qf5#
      • 1...c2
        • 2.Bxc2#
      • 1...Sa3!
  • Keys
    • 1.f3!
      • threat
        • 2.Bc2#
      • 1...Bxa5
        • 2.Qd6#
      • 1...Bf7
        • 2.Qe4#
      • 1...Sa3
        • 2.Qxc3#
      • 1...c2
        • 2.Bxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • P(d);XP(D)::B(F)
    • P(d);::B(F)
    • P(h);N_GUARD,S_CUTB(g)::QAR2(I)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(c);P-FLIGHT::S(H),XP(h)
      • Refutation
        • B(i);XQ(I)
    • Try
      • P(D);XP(d)
      • Threat
        • B(F)
      • Vars
        • B(g);N_GUARD,XS(H)::QAR1(I)
        • B(i);N_GUARD,P_PINB(F)::QAB(I)
        • P(b);::B(F),XP(b)
      • Refutation
        • S(a);
  • Actual
    • P(D);
    • Threat
      • B(F)
    • Vars
      • B(g);N_GUARD,XS(H)::QAR(I)
      • B(i);N_GUARD,P_PINB(F)::QAB1(I)
      • S(a);N_GUARD::QAR1(I),XP(b)
      • P(b);::B(F),XP(b)
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