MESON Chess Problem Database

Problem Display
PID: 244474 (B7/Nn6/p3pK2/r1p2n1R/1p1k1B2/2NPr3/1PQ1P3/7b w - - 0 1)

Eerkes, Allard Pieter

Arbejder-Skak, 1951

B7/Nn6/p3pK2/r1p2n1R/1p1k1B2/2NPr3/1PQ1P3/7b

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxd3#
    • 1...Rf3
      • 2.Sc6#
    • 1...Re4
      • 2.Sc6#
    • 1...Be4
      • 2.Be5#
    • 1...Bc6
      • 2.Sxc6#
  • Tries
    • 1.Scb5+?
      • 1...Kd5
        • 2.Bxb7#
        • 2.Qc4#
      • 1...Rxb5
        • 2.Qc4#
      • 1...axb5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...Rxd3
        • 2.Qxd3#
      • 1...Sfd6
        • 2.Sc6#
      • 1...Sbd6
        • 2.Be5#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(b);OGATE,XP(E)::QAR1(B),XR(b)
    • R(b);S_CUTB(a)::S(I)
    • B(a);S_CUTR(b)::B(F)
    • B(a);N_GUARD::S(I),XB(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(e);XS(D)::QAR1(B)
      • Refutation
        • P(h);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(g)::QAB1(B)
      • R(b);OGATE,XP(E)::QAR1(B),XR(b)
      • S(g);::S(I)
      • S(j);::B(F)
      • P(f);::QAR1(B),XP(f)
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