MESON Chess Problem Database

Problem Display
PID: 45408 (3R4/b4q2/5p2/4p2B/r7/1N1P2Q1/PB2P2R/1r1k1N1K w - - 0 1)

Grossman, Itzhak

Hirschenson, Aaron

1st HM., BCF 110. Ty., 1965-1966

3R4/b4q2/5p2/4p2B/r7/1N1P2Q1/PB2P2R/1r1k1N1K

#2

11 + 7

3841 The Art of Israeli Chess Composition 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.e3#
    • 1...Qxb3
      • 2.e4#
    • 1...Qc4
      • 2.e4#
    • 1...Qd5+
      • 2.e4#
    • 1...Qb7+
      • 2.e4#
    • 1...Qc7
      • 2.e4#
    • 1...Qe7
      • 2.e4#
    • 1...Qf8
      • 2.e4#
    • 1...Rd4
      • 2.Se3#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bb8
      • 2.Se3#
  • Tries
    • 1.Qe1+?
      • 1...Kc2
        • 2.Qd2#
        • 2.e3#
      • 1...Kxe1!
    • 1.e3+?
      • 1...Rg4
        • 2.Bxg4#
        • 2.Rd2#
      • 1...Qxh5!
  • Keys
    • 1.d4!
      • threat
        • 2.Se3#
      • 1...Qd5+
        • 2.e4#
      • 1...Qb7+
        • 2.e4#
      • 1...Kc2
        • 2.e4#
      • 1...Qxb3
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • K(b);P_PINS(A),S_FLIGHT::R(F)+P(E)
    • Q(g);N_GUARD,XS(G)::B(J)+P(E)
    • Q(g);N_GUARD::B(J)+P(E)
    • Q(g);CHECK,N_GUARD::B(J)+P(E)
    • R(c);S_CUTB(f)::S(A)
    • B(f);N_GUARD::S(A),XB(f)
    • B(f);N_GUARD::S(A)
  • Tries
    • Try
      • Q(I);CHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(I)
    • Try
      • P(E);CHECK
      • Refutation
        • Q(g);P_PINR(F),XB(J)
  • Actual
    • P(H);
    • Threat
      • S(A)
    • Vars
      • Q(g);CHECK,N_GUARD::B(J)+P(E)
      • K(b);P_PINS(A),S_FLIGHT::R(F)+P(E)
      • Q(g);N_GUARD,XS(G)::B(J)+P(E)
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