MESON Chess Problem Database

Problem Display
PID: 244475 (Kb6/7Q/B7/2p1nr2/N2kP1b1/1PN4R/5P2/3r4 w - - 0 1)

Eerkes, Allard Pieter

Parallele 50, 1951

Kb6/7Q/B7/2p1nr2/N2kP1b1/1PN4R/5P2/3r4

#2

9 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2
      • 2.Sb5#
    • 1...Rf3
      • 2.Se2#
    • 1...Rf4
      • 2.Sb5#
    • 1...Rg5
      • 2.Sb5#
    • 1...Rh5
      • 2.Sb5#
    • 1...Rf6
      • 2.Sb5#
    • 1...Rf7
      • 2.Sb5#
    • 1...Rf8
      • 2.Sb5#
  • Tries
    • 1.Se2+?
      • 1...Kxe4
        • 2.Sac3#
      • 1...Bxe2!
    • 1.Qd7+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Sxd7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxc5#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Ba7
        • 2.Qd6#
      • 1...Sd3
        • 2.Sb5#
      • 1...Sf3
        • 2.Se2#
      • 1...Sc4
        • 2.Sb5#
      • 1...Sc6
        • 2.Sb5#
      • 1...Sg6
        • 2.Sb5#
      • 1...Sd7
        • 2.Sb5#
      • 1...Sf7
        • 2.Sb5#
      • 1...c4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 8
  • Sets
    • R(f);XP(A)::S(C)
    • R(f);S_CUTB(c)::S(C)
    • R(f);::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINR(f),XP(F)::S(E)
      • Refutation
        • B(c);XS(C)
    • Try
      • Q(H);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAR2(H),XB(g)
      • Refutation
        • S(e);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H),XP(d)
    • Vars
      • B(g);N_GUARD::QAR2(H),XB(g)
      • B(g);N_GUARD::QAR2(H)
      • S(e);::S(C)
      • S(e);S_CUTB(c)::S(C)
      • P(d);::QAB1(H)
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