MESON Chess Problem Database

Problem Display
PID: 55096 (5B2/8/2pq4/Rb3Qp1/n1Pk2p1/P2N4/2KP4/2N5 w - - 0 1)

Grossman, Itzhak

Hirschenson, Aaron

3rd Prize, Boletim da UBP, 1962

5B2/8/2pq4/Rb3Qp1/n1Pk2p1/P2N4/2KP4/2N5

#2

9 + 7

3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa3
      • 2.Qxg4#
    • 1...Qb4
      • 2.Qxg4#
    • 1...Qc5
      • 2.Qxg4#
    • 1...Qh6
      • 2.Qxg4#
    • 1...Qd8
      • 2.Qxg4#
    • 1...Bxc4
      • 2.Se2#
  • Tries
    • 1.Bg7+?
      • 1...Qe5
        • 2.Qxg4#
      • 1...Qf6
        • 2.Qxg4#
      • 1...Kxc4!
    • 1.Rxa4?
      • threat
        • 2.Se2#
        • 2.Sb3#
      • 1...Qxa3
        • 2.Se2#
        • 2.Bg7#
        • 2.Qxg4#
        • 2.Qe5#
      • 1...Qb4
        • 2.Qxg4#
      • 1...Qh2
        • 2.Sb3#
        • 2.Bc5#
        • 2.cxb5#
      • 1...Qe5
        • 2.Sb3#
        • 2.Qxe5#
      • 1...Qe7
        • 2.Sb3#
      • 1...Qe6
        • 2.Sb3#
        • 2.Bc5#
      • 1...Bxa4+!
  • Keys
    • 1.Se5!
      • threat
        • 2.Sb3#
      • 1...Kc5
        • 2.Qf2#
      • 1...Qxa3
        • 2.Se2#
      • 1...Qxe5
        • 2.Qd3#
      • 1...Bxc4
        • 2.Qxg4#
      • 1...Qb4
        • 2.Se2#
      • 1...Sc5
        • 2.Se2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD,XP(D)::QAR(H),XP(c)
    • Q(g);N_GUARD::QAR(H),XP(c)
    • Q(g);N_GUARD,P_PINP(F)::QAR(H),XP(c)
    • B(d);SBLOCK,XP(F)::S(A)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • Q(g);P_SPINQ(g)::QAR(H),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XP(F)
    • Try
      • R(G);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);N_GUARD::QAR(H),XP(c)
        • Q(g);::S(A)
      • Refutation
        • B(d);CHECK,XR(G)
  • Actual
    • S(E);
    • Threat
      • S(A)
    • Vars
      • K(b);P_SPINB(d),P_SPINQ(g),S_FLIGHT::QAB(H)
      • Q(g);XP(D)::S(A)
      • Q(g);SBLOCK,XS(E)::QAR1(H)
      • B(d);XP(F)::QAR(H),XP(c)
      • Q(g);::S(A)
      • S(a);SBLOCK::S(A)
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