MESON Chess Problem Database

Problem Display
PID: 145466 (6nK/5pP1/1R2Nk1b/2QPq1pB/p3pN2/r7/r4R2/B7 w - - 0 1)

Simkhovich, Froim Markovich

3rd Prize, Dutch East Indies Chess Association, 1925

6nK/5pP1/1R2Nk1b/2QPq1pB/p3pN2/r7/r4R2/B7

#2

10 + 10

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Sd3#
    • 1...Bxg7+
      • 2.Sxg7#
    • 1...fxe6
      • 2.Qf8#
  • Tries
    • 1.Sd4+?
      • 1...Qd6
        • 2.Qxd6#
      • 1...Qe6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxf7#
      • 1...Bxg7+
        • 2.Sxg7#
      • 1...Kf5
        • 2.Qxe5#
      • 1...Qxa1
        • 2.Sd4#
      • 1...fxe6
        • 2.Qf7#
      • 1...Qb2
        • 2.Sd3#
      • 1...Qc3
        • 2.Se2#
      • 1...Qd4
        • 2.Sxd4#
      • 1...Se7
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(e);S_CUTR(a)::R(B)+S(C)
    • B(h);CHECK,XP(I)::R(G)+S(H),XB(h)
    • P(i);OGATEB,P_SPINP(i),XS(H)::QAR2(D)
  • Tries
    • Try
      • S(H);CHECK,N_PINQ(e)
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e)::QAR2(D),XQ(e)
      • Refutation
        • Q(e);P_SPINQ(e)
  • Actual
    • Q(D);
    • Threat
      • QAR1(D),XP(i)
    • Vars
      • B(h);CHECK,XP(I)::R(G)+S(H),XB(h)
      • K(g);N_SPINQ(e),P-FLIGHT,P_PINP(I)::QAR1(D),XQ(e)
      • Q(e);N_GUARD,N_SPINQ(e),XB(A)::R(G)+S(H)
      • P(i);P_SPINP(i),XS(H)::QAR1(D)
      • Q(e);S_CUTR(a)::R(B)+S(C)
      • Q(e);S_CUTR(b)::R(B)+S(C)
      • Q(e);N_GUARD::R(G)+S(H),XQ(e)
      • S(j);SBLOCK::QAB1(D),XQ(e)
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