MESON Chess Problem Database

Problem Display
PID: 121007 (8/2n5/8/1N5Q/1pk5/6R1/8/5K2 w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1899

(First published on Sat Sep 30 1899)

8/2n5/8/1N5Q/1pk5/6R1/8/5K2

#2

4 + 3

3713 Snap 2009
6490 yacpdb 2009
5454 Near Snap 2019
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...b3!
  • Keys
    • 1.Rd3!
      • 1...Kxd3
        • 2.Qe2#
      • 1...Sxb5
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...b3
        • 2.Rd4#
      • 1...Sa6
        • 2.Qd5#
      • 1...Se6
        • 2.Qd5#
      • 1...Sa8
        • 2.Qd5#
      • 1...Se8
        • 2.Qd5#

Anticipated by 1962(1859), 224218(1887)

This anticipates 205348(1949), 153953(1952)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);XS(c)
      • Threat
        • QAB1(D)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);
  • Actual
    • R(B);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(B)::QAB1(D)
      • S(c);N_GUARD,XS(C)::QAB1(D)
      • S(c);N_GUARD::QAB1(D),XS(c)
      • P(a);SBLOCK::R1(B)
      • S(c);N_GUARD::QAB1(D)
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