MESON Chess Problem Database

Problem Display
PID: 12476 (Nq6/3R4/2p1P3/2p5/P1kP1N1R/Q3P1p1/1p6/1K6 w - - 0 1)

Einat, Paz

Themes-64, 1979

Nq6/3R4/2p1P3/2p5/P1kP1N1R/Q3P1p1/1p6/1K6

#2

10 + 6

3841 The Art of Israeli Chess Composition 1983
3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Sb6#
    • 1...Qe5
      • 2.Sb6#
    • 1...Qd6
      • 2.Sb6#
    • 1...Qb3
      • 2.Qxc5#
    • 1...Qb4
      • 2.Qd3#
    • 1...Qb6
      • 2.Sxb6#
    • 1...Qc8
      • 2.Sb6#
    • 1...Qe8
      • 2.Sb6#
    • 1...Qf8
      • 2.Sb6#
    • 1...Qg8
      • 2.Sb6#
    • 1...Qh8
      • 2.Sb6#
    • 1...cxd4
      • 2.Rxd4#
  • Tries
    • 1.Rb7?
      • threat
        • 2.Sb6#
        • 2.Qxc5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qxf4
        • 2.Sb6#
        • 2.Qb3#
      • 1...Qxa8
        • 2.Qxc5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...cxd4
        • 2.Sb6#
        • 2.Qb4#
      • 1...Qc7
        • 2.Qxc5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qe5
        • 2.Sb6#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qd6
        • 2.Sb6#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qa7
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qd8
        • 2.Qxc5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qf8
        • 2.Sb6#
        • 2.Qb3#
        • 2.Qd3#
      • 1...Qxb7!
    • 1.dxc5?
      • threat
        • 2.Rd4#
      • 1...Qxf4
        • 2.Sb6#
        • 2.Rxf4#
      • 1...Qb3
        • 2.Se2#
      • 1...Qb4
        • 2.Sd3#
      • 1...Qe5
        • 2.Sb6#
      • 1...Qd6
        • 2.Sb6#
      • 1...Qh8
        • 2.Sb6#
      • 1...Qd8!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qc3#
      • 1...Qd6
        • 2.Sb6#
      • 1...Qb3
        • 2.dxc5#
      • 1...Qb4
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD,XS(F)::S(J)
    • Q(f);N_GUARD::S(J)
    • Q(f);SBLOCK::QAR1(B),XP(d)
    • Q(f);SBLOCK::QAB1(B)
    • Q(f);N_GUARD::S(J),XQ(f)
    • P(d);OGATE,XP(E)::R1(I),XP(d)
  • Tries
    • Try
      • R(I);
      • Threat
        • DUALS(4)
      • Refutation
        • Q(f);XR(I)
    • Try
      • P(E);XP(d)
      • Threat
        • R1(I)
      • Vars
        • Q(f);N_GUARD::R(G)+S(F)
        • Q(f);N_GUARD::S(J)
      • Refutation
        • Q(f);
  • Actual
    • S(F);
    • Threat
      • QAR1(B)
    • Vars
      • Q(f);N_GUARD::S(J)
      • Q(f);N_GUARD::R(G)+P(E),XP(d)
      • Q(f);N_GUARD::R(G)+P(E)
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