MESON Chess Problem Database

Problem Display
PID: 6140 (2Nb1B2/N1pPr3/2p2n1Q/1pk2P2/3R2p1/P2K2P1/2p5/8 w - - 0 1)

Schiffmann, Israel Abraham

3rd Prize, L'Echiquier, 1927

2Nb1B2/N1pPr3/2p2n1Q/1pk2P2/3R2p1/P2K2P1/2p5/8

#2

10 + 9

1397 Faszinierendes Schachproblem 1963

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Qxc6#
    • 1...Sd5
      • 2.Qxc6#
    • 1...Sh5
      • 2.Qxc6#
    • 1...Sxd7
      • 2.Qxc6#
    • 1...Sh7
      • 2.Qxc6#
    • 1...Se8
      • 2.Qxc6#
    • 1...Sg8
      • 2.Qxc6#
    • 1...c1Q
      • 2.Qxc1#
    • 1...c1S+
      • 2.Qxc1#
    • 1...c1B
      • 2.Qxc1#
    • 1...c1R
      • 2.Qxc1#
    • 1...b4
      • 2.axb4#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qc3#
        • 2.Qb4#
        • 2.Qxc2#
      • 1...c1S+
        • 2.Qxc1#
      • 1...c1Q
        • 2.Qxc1#
        • 2.Qb4#
      • 1...c1B
        • 2.Qxc1#
        • 2.Qc3#
        • 2.Qb4#
        • 2.Qc2#
      • 1...c1R
        • 2.Qxc1#
        • 2.Qb4#
      • 1...Se4
        • 2.Qb4#
      • 1...b4
        • 2.Qxb4#
        • 2.Qxc2#
        • 2.axb4#
      • 1...Sd5!
  • Keys
    • 1.Qe3!
      • 1...c1S+
        • 2.Qxc1#
      • 1...Sxd7
        • 2.Rxd7#
      • 1...c1Q
        • 2.Qxc1#
      • 1...c1B
        • 2.Qxc1#
      • 1...c1R
        • 2.Qxc1#
      • 1...Sd5
        • 2.Rc4#
      • 1...Se4
        • 2.Rd6#
      • 1...Sh5
        • 2.Qe5#
      • 1...Sh7
        • 2.Qe5#
      • 1...Se8
        • 2.Qe5#
      • 1...Sg8
        • 2.Qe5#
      • 1...b4
        • 2.axb4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE::QAR1(F),XP(e)
    • S(f);OGATE,XP(H)::QAR1(F),XP(e)
    • P(a);OGATEB::QAR(F),XQ(a)
    • P(a);CHECK,OGATEB::QAR(F),XS(a)
    • P(a);OGATEB::QAR(F),XB(a)
    • P(a);OGATEB::QAR(F),XR(a)
    • P(c);OGATE::P(A),XP(c)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • P(a);CHECK,OGATEB::QAR(F),XS(a)
        • S(f);::QAB1(F)
      • Refutation
        • S(f);
  • Actual
    • Q(F);
    • Vars
      • P(a);CHECK,OGATEB::QAR(F),XS(a)
      • S(f);OGATE,XP(H)::QAB(F)+R(D),XS(f)
      • P(a);OGATEB::QAR(F),XQ(a)
      • P(a);OGATEB::QAR(F),XB(a)
      • P(a);OGATEB::QAR(F),XR(a)
      • S(f);SBLOCK::QAB(F)+R(D),DCHECK
      • S(f);::QAB(F)+R(D)
      • S(f);N_GUARD::QAR2(F)
      • P(c);OGATE::P(A),XP(c)
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