MESON Chess Problem Database

Problem Display
PID: 268590 (8/8/2N2p2/2R4Q/4p3/1b1k4/p4P2/K1nnB3 w - - 0 1)

Holroyd, GC

Sunday Referee, 1929

(First published on Sun Nov 10 1929)

8/8/2N2p2/2R4Q/4p3/1b1k4/p4P2/K1nnB3

#2

6 + 7

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Qxd1#
    • 1...Bd5
      • 2.Qxd1#
    • 1...Be6
      • 2.Qxd1#
    • 1...Bf7
      • 2.Qxd1#
    • 1...Bg8
      • 2.Qxd1#
    • 1...Sb2
      • 2.Rc3#
    • 1...Sxf2
      • 2.Rc3#
    • 1...Sc3
      • 2.Rxc3#
    • 1...Se3
      • 2.Rc3#
  • Tries
    • 1.Rd5+?
      • 1...Kc2
        • 2.Sb4#
        • 2.Qxd1#
      • 1...Kc4
        • 2.Sa5#
        • 2.Rd4#
      • 1...Bxd5!
  • Keys
    • 1.Rc2!
      • threat
        • 2.Qxd1#
      • 1...Kxc2
        • 2.Sb4#
      • 1...Bxc2
        • 2.Qb5#
      • 1...Sxf2
        • 2.Rc3#
      • 1...Sc3
        • 2.Rxc3#
      • 1...e3
        • 2.Qf5#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sb2
        • 2.Rc3#
      • 1...Se3
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(d);N_GUARD::QAR2(E),XS(b)
    • S(b);N_GUARD::R1(D)
    • S(b);N_GUARD,XP(C)::R1(D)
    • S(b);N_GUARD::R1(D),XS(b)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • B(d);XR(D)
  • Actual
    • R(D);
    • Threat
      • QAR2(E),XS(b)
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XR(D)::S(F)
      • B(d);N_GUARD,SBLOCK,XR(D)::QAB(E)
      • S(b);N_GUARD,XP(C)::R1(D)
      • S(b);N_GUARD::R1(D),XS(b)
      • P(f);OGATEB::QAB(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • S(b);N_GUARD::R1(D)
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