MESON Chess Problem Database

Problem Display
PID: 141177 (8/2B5/2p5/2pk2K1/6Q1/1rnppPN1/1P6/1n6 w - - 0 1)

Anderson, Gerald Frank

Natal Mercury, 1914

(First published on Mon Sep 14 1914)

8/2B5/2p5/2pk2K1/6Q1/1rnppPN1/1P6/1n6

#2

6 + 8

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qe4#
    • 1...Sa2
      • 2.Qe4#
    • 1...Se2
      • 2.Qe4#
    • 1...Sa4
      • 2.Qe4#
    • 1...Se4+
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qe4#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Sxe3#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qe4#
      • 1...e2
        • 2.Se3#
      • 1...c4!
    • 1.Sh5?
      • threat
        • 2.Sf6#
      • 1...Se4+
        • 2.Qxe4#
      • 1...c4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Sf5#
        • 2.Be5#
      • 1...Kxe6!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sf6#
      • 1...Sxe4+
        • 2.Qxe4#
      • 1...Kc4
        • 2.Sxc3#
      • 1...Kd4
        • 2.Sxc3#
      • 1...c4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(c);N_GUARD::QAB1(D)
    • S(c);CHECK,N_GUARD::QAB1(D),XS(c)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C),XP(e)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(D),XS(c)
        • S(c);N_GUARD::QAB1(D)
        • P(e);::S(C)
      • Refutation
        • P(f);
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • S(c);CHECK,N_GUARD::QAB1(D),XS(c)
      • Refutation
        • P(f);
    • Try
      • Q(D);CHECK
      • Refutation
        • K(g);S_FLIGHT,XQ(D)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • S(c);CHECK,OGATE,XS(C)::QAB1(D),XS(c)
      • K(g);S_FLIGHT::QAR(D)+S(C),XS(c)
      • K(g);P-FLIGHT::QAR(D)+S(C),XS(c)
      • P(f);SBLOCK::QAR2(D)
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