MESON Chess Problem Database

Problem Display
PID: 221558 (2r5/2b3Q1/4p3/1pk5/1N4K1/Pn1R4/3Nn3/8 w - - 0 1)

Moon, James Frank

The Field, 1892

(First published on Sat Apr 30 1892)

2r5/2b3Q1/4p3/1pk5/1N4K1/Pn1R4/3Nn3/8

#2

6 + 7

3402 Hampstead and Highgate Express 1896
187 The Chess Bouquet 1897
14867 BCPS Library 2014
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxc7#
    • 1...Rb8
      • 2.Qxc7#
    • 1...Rd8
      • 2.Qxc7#
    • 1...Re8
      • 2.Qxc7#
    • 1...Rf8
      • 2.Qxc7#
    • 1...Rh8
      • 2.Qxc7#
    • 1...Bh2
      • 2.Qa7#
    • 1...Bg3
      • 2.Qa7#
    • 1...Bf4
      • 2.Qa7#
    • 1...Be5
      • 2.Qa7#
    • 1...Bb6
      • 2.Qe5#
      • 2.Qe7#
    • 1...Bd6
      • 2.Qa7#
  • Tries
    • 1.Qe7+?
      • 1...Bd6
        • 2.Qxd6#
        • 2.Qa7#
      • 1...Kb6!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Rc6#
        • 2.Qe5#
      • 1...Kxd6
        • 2.Se4#
      • 1...Bxd6
        • 2.Qa7#
      • 1...Sxd2
        • 2.Rc6#
      • 1...Rg8
        • 2.Rc6#
      • 1...Ba5
        • 2.Qe5#
      • 1...Bb6
        • 2.Qe5#
      • 1...Bb8
        • 2.Qe5#
      • 1...Bd8
        • 2.Qe5#
      • 1...Sc3
        • 2.Rc6#
      • 1...Sed4
        • 2.Qe5#
      • 1...Sf4
        • 2.Rc6#
      • 1...Sbd4
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 10
  • Sets
    • R(g);N_GUARD::QAR2(F),XB(f)
    • B(f);OGATE::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);S_FLIGHT,XR(C)::S(A)
      • B(f);OGATE,SBLOCK,XR(C)::QAB(F)
      • S(b);XS(A)::R1(C)
      • R(g);P_PINQ(F)::R1(C)
      • B(f);::QAR2(F)
      • S(a);::R1(C)
      • S(a);::QAR2(F)
      • S(b);::QAR2(F)
      • P(e);::QAR2(F),XP(e)
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