MESON Chess Problem Database

Problem Display
PID: 151680 (1Qn1N3/p1r1P2K/Rq4p1/2pNk3/2P1p1B1/4P3/8/8 w - - 0 1)

Evans, TC

The Referee, 1927

(First published on Sun Oct 23 1927)

1Qn1N3/p1r1P2K/Rq4p1/2pNk3/2P1p1B1/4P3/8/8

#2

9 + 8

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Re6#
    • 1...Qb1
      • 2.Re6#
    • 1...Qb2
      • 2.Re6#
      • 2.Qxb2#
    • 1...Qb3
      • 2.Re6#
    • 1...Qb4
      • 2.Re6#
    • 1...Qb5
      • 2.Re6#
    • 1...Qxa6
      • 2.Qb2#
    • 1...Qc6
      • 2.Qb2#
    • 1...Qd6
      • 2.Qb2#
    • 1...Qe6
      • 2.Rxe6#
      • 2.Qb2#
    • 1...Qf6
      • 2.Qb2#
    • 1...Qb7
      • 2.Re6#
    • 1...Qxb8
      • 2.Re6#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf7#
      • 1...Kxd6
        • 2.Qxc7#
      • 1...Qxd6
        • 2.Qb2#
      • 1...Sxd6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 10
  • Sets
    • Q(d);OGATE::R1(E)
    • Q(d);OGATE,XR(E)::QAB(H)
    • Q(d);OGATE::QAB(H)
    • Q(d);N_SPINR(g),OGATE::QAB(H)
    • Q(d);N_SPINR(g),OGATE,XQ(H)::R1(E)
  • Actual
    • S(I);N_PINR(g)
    • Threat
      • S(I)
    • Vars
      • K(c);OGATEB,P_SPINQ(d),P_SPINR(g),S_FLIGHT,XS(I)::QAB1(H),XR(g)
      • Q(d);OGATE,XS(I)::QAB(H)
      • S(h);OGATE,SBLOCK,XS(I)::QAB(H)
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