MESON Chess Problem Database

Problem Display
PID: 9506 (3nbb2/Q1pr1pp1/B7/p1PP3p/K1Nk3r/1RN1RPP1/8/B7 w - - 0 1)

Mackenzie, Arthur Ford

1st Prize, Sydney Morning Herald, 1904-1905

3nbb2/Q1pr1pp1/B7/p1PP3p/K1Nk3r/1RN1RPP1/8/B7

#2

12 + 11

16 Chess Amateur (The) 1909
15 British Chess Magazine 1911
5066 Classic Chess Problems by Pioneer Composers 1970
5424 Versunkene Schatze 1998
56 The Problemist 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6+
      • 2.c6#
    • 1...Re7+
      • 2.c6#
  • Tries
    • 1.Sb5+?
      • 1...Kxc4
        • 2.Sxc7#
      • 1...Kxd5!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sc2#
      • 1...Kxe3+
        • 2.Se4#
      • 1...Rxd5+
        • 2.Scb5#
      • 1...Rd6+
        • 2.c6#
      • 1...Re7+
        • 2.c6#
      • 1...Re4
        • 2.Rxe4#
      • 1...Rh2
        • 2.Re4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(f);CHECK,S_CUTB(k)::QAB(L)+P(I)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(H)::B(K)+S(C),XP(e)
      • Refutation
        • K(a);P-FLIGHT,P_PINS(H),XP(J)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(a);CHECK,S_FLIGHT,XR(D)::R(B)+S(C)
      • R(f);CHECK,SBLOCK,XP(J)::B(A)+S(C),DCHECK
      • R(f);CHECK,S_CUTB(k)::QAB(L)+P(I)
      • R(b);N_GUARD::R1(D),XR(b)
      • R(b);N_GUARD::R1(D)
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