MESON Chess Problem Database

Problem Display
PID: 9485 (4R3/1n4KB/b3N3/3P1R2/2pNk1p1/1Qn1p3/5r2/b4rq1 w - - 0 1)

Mackenzie, Arthur Ford

3rd Prize, Hampstead and Highgate Express, 1904

4R3/1n4KB/b3N3/3P1R2/2pNk1p1/1Qn1p3/5r2/b4rq1

#2

8 + 11

2794 Terms & Themes of Chess Problems 1907
16 Chess Amateur (The) 1909
23 Die Schwalbe 2005
133 The Problemist Supplement 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Rxf2#
    • 1...Rc2
      • 2.Qxc2#
    • 1...Rf3
      • 2.Qc2#
    • 1...Rf4
      • 2.Qc2#
    • 1...Se2
      • 2.Qc2#
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sc5#
      • 1...Sb1+
        • 2.Sed4#
      • 1...Sd1+
        • 2.Sed4#
      • 1...Sa2+
        • 2.Sed4#
      • 1...Se2+
        • 2.Sed4#
      • 1...Sa4+
        • 2.Sed4#
      • 1...Sb5+
        • 2.Sed4#
      • 1...Sxd5+
        • 2.Rf6#
      • 1...gxf3+
        • 2.Rg5#
      • 1...Kd3
        • 2.Sf4#
      • 1...Rxf3
        • 2.Qc2#
      • 1...Sc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 8
    • REMOVED MATES = 2
  • Sets
    • K(h);P_SPINS(e),S_FLIGHT::B(G)+R(D),XR(d)
    • R(d);N_GUARD::QAB(A),XR(d)
    • R(d);N_GUARD::QAB(A)
    • S(e);P_PINS(B),S_CUTR(d)::QAB(A)
  • Actual
    • S(B);
    • Threat
      • R(H)+S(E),DCHECK
    • Vars
      • S(e);CHECK::R(H)+S(E)
      • S(e);CHECK,SBLOCK,XP(C)::B(G)+R(D)
      • P(i);CHECK,SBLOCK,XS(B)::B(G)+R(D)
      • K(h);P_SPINS(e),S_FLIGHT::S(E)
      • R(d);N_GUARD,XS(B)::QAB(A)
      • S(k);::R(H)+S(E),DCHECK,XS(k)
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