MESON Chess Problem Database

Problem Display
PID: 12268 (8/b7/4NK2/3rP1P1/2P1k3/1Q3N2/1R1P1pP1/6B1 w - - 0 1)

Lender, Baruch

2nd HM., Israel Ring Ty., 1977

8/b7/4NK2/3rP1P1/2P1k3/1Q3N2/1R1P1pP1/6B1

#2

11 + 4

3841 The Art of Israeli Chess Composition 1983
56 The Problemist 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sxd2#
    • 1...Rd4
      • 2.Qe3#
    • 1...Ra5
      • 2.Qc2#
    • 1...Rb5
      • 2.Qc2#
    • 1...Rc5
      • 2.Qc2#
      • 2.Qe3#
    • 1...Rxe5
      • 2.Qc2#
    • 1...Be3
      • 2.Qxe3#
    • 1...Bd4
      • 2.Qc2#
    • 1...Bb8
      • 2.Qe3#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qxd5#
        • 2.Qh7#
      • 1...Bd4
        • 2.Qh7#
      • 1...Kd3!
    • 1.d3+?
      • 1...Ke3
        • 2.Bxf2#
      • 1...Rxd3!
  • Keys
    • 1.d4!
      • threat
        • 2.Sd2#
        • 2.Re2#
      • 1...Rxd4
        • 2.Re2#
      • 1...Bxd4
        • 2.Sd2#
      • 1...fxg1Q
        • 2.Sd2#
      • 1...fxg1S
        • 2.Sd2#
      • 1...fxg1B
        • 2.Sd2#
      • 1...f1Q
        • 2.Qe3#
      • 1...f1S
        • 2.Qc2#
      • 1...f1B
        • 2.Sd2#
        • 2.Qe3#
      • 1...f1R
        • 2.Re2#
        • 2.Qc2#
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • R(c);XP(C)::S(F),XR(c)
    • R(c);S_CUTB(d)::QAR1(E)
    • R(c);N_GUARD::QAB(E)
    • R(c);N_GUARD,XP(H)::QAB(E)
    • B(d);N_GUARD::QAR1(E),XB(d)
    • B(d);P_PINP(H),S_CUTR(c)::QAB(E)
    • B(d);N_GUARD::QAR1(E)
  • Tries
    • Try
      • Q(E);P_PINR(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);P_PINP(H)::QAB(E)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINP(a)::B(A),XP(a)
      • Refutation
        • R(c);XP(C)
  • Actual
    • P(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(c);XP(C)::R(B)
      • B(d);P_PINP(H),XP(C)::S(F)
      • P(a);XB(A)::S(F)
      • P(a);P_PINS(F)::QAR1(E)
      • P(a);::QAB(E)
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