MESON Chess Problem Database

Problem Display
PID: 241614 (B5R1/1q3Q1K/3pN3/5N2/8/R2b1kBP/2nn1Pp1/3r1rb1 w - - 0 1)

Ellerman, Arnoldo

Magyar Sakkvilag, 1933

B5R1/1q3Q1K/3pN3/5N2/8/R2b1kBP/2nn1Pp1/3r1rb1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sg5#
    • 1...Qe4
      • 2.Qh5#
    • 1...Se4
      • 2.Sfd4#
  • Tries
    • 1.Sd4+?
      • 1...Ke4
        • 2.Rg4#
        • 2.Re8#
      • 1...Sxd4!
  • Keys
    • 1.Re8!
      • threat
        • 2.Sg5#
      • 1...Ke2
        • 2.Sd4#
      • 1...Ke4
        • 2.Sed4#
        • 2.Sg5#
      • 1...Qe4
        • 2.Qh5#
      • 1...Se3
        • 2.Sd4#
      • 1...Se4
        • 2.Sfd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(h);N_PINS(E),N_SPINB(g),S_FLIGHT::S(F)
    • Q(j);N_PINQ(G)::QAB(G)
    • S(e);N_PINS(E),N_SPINQ(j),SBLOCK::QAR(G)+S(E),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • S(d);XS(F)
  • Actual
    • R(J);
    • Threat
      • S(F)
    • Vars
      • K(h);N_SPINB(g),N_SPINQ(j),S_FLIGHT::R(J)+S(F),DCHECK
      • Q(j);N_PINQ(G)::QAB(G)
      • S(d);N_GUARD,N_SPINB(g)::S(F)
      • S(e);N_PINS(E),N_SPINQ(j),SBLOCK::QAR(G)+S(E),DCHECK
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