MESON Chess Problem Database

Problem Display
PID: 6735 (bn3R2/3p4/r2PN3/1BQ5/3P2pB/3PN2p/p1KPk3/b7 w - - 0 1)

Eddy, Edwin John

Evening News, 1933

(First published on Wed Feb 22 1933)

bn3R2/3p4/r2PN3/1BQ5/3P2pB/3PN2p/p1KPk3/b7

#2

11 + 9

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Sxd4#
    • 1...Bf3
      • 2.Sf4#
    • 1...Be4
      • 2.dxe4#
  • Tries
    • 1.Qf5?
      • threat
        • 2.Qf1#
        • 2.Qf2#
      • 1...g3
        • 2.Qf1#
      • 1...Bg2
        • 2.Qf2#
      • 1...Bf3
        • 2.Sf4#
      • 1...Rc6+!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Sd5#
      • 1...Rc6+
        • 2.Sc4#
      • 1...Bxd4
        • 2.Sxd4#
      • 1...Bh1
        • 2.Sg2#
      • 1...Bg2
        • 2.Sxg2#
      • 1...Bf3
        • 2.Sf4#
      • 1...Be4
        • 2.dxe4#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Sc6
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(a);XP(E)::S(J),XB(a)
    • B(h);SBLOCK::S(J)
    • B(h);OGATE,P_PINP(C)::B(G)+P(C),XB(h)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAB1(H)
        • B(h);::QAR1(H)
        • B(h);SBLOCK::S(J)
      • Refutation
        • R(f);CHECK
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+S(D)
    • Vars
      • R(f);CHECK,S_CUTB(h)::QAR(H)+S(D)
      • B(a);XP(E)::S(J),XB(a)
      • B(h);N_GUARD::QAR(H)+S(D)
      • B(h);N_GUARD::QAR(H)+S(D),XB(h)
      • B(h);SBLOCK::S(J)
      • B(h);OGATE,P_PINP(C)::B(G)+P(C),XB(h)
      • B(h);::QAR(H)+S(D),XB(h)
      • S(i);S_CUTB(h)::QAR(H)
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