MESON Chess Problem Database

Problem Display
PID: 154197 (8/8/b7/4N1n1/8/3p2K1/3P1R2/1Q1rk3 w - - 0 1)

Easthope, M

Sheffield Guardian (The), 1909

(First published on Fri Oct 29 1909)

8/8/b7/4N1n1/8/3p2K1/3P1R2/1Q1rk3

#2

5 + 5

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qxc1#
    • 1...Bb7
      • 2.Sxd3#
    • 1...Bc8
      • 2.Sxd3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sh3
      • 2.Sf3#
    • 1...Se6
      • 2.Sf3#
    • 1...Sf7
      • 2.Sf3#
    • 1...Sh7
      • 2.Sf3#
  • Tries
    • 1.Rf1+?
      • 1...Kxf1
        • 2.Qxd1#
      • 1...Ke2
        • 2.Qxd1#
      • 1...Kxd2!
    • 1.Qxd3?
      • threat
        • 2.Rf1#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Se4+!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qh1#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Bxb7
        • 2.Sxd3#
      • 1...Sf3
        • 2.Sxf3#
        • 2.Qe4#
      • 1...Sh3
        • 2.Sf3#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);OGATEB::QAR2(A),XR(a)
    • B(e);N_GUARD::S(E),XP(c)
    • S(d);N_GUARD::S(E),XS(d)
    • S(d);N_GUARD::S(E)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(b);P-FLIGHT,XR(C)::QAR2(A),XR(a)
        • K(b);N_SPINR(a),P-FLIGHT::QAB1(A),XR(a)
      • Refutation
        • K(b);N_SPINR(a),S_FLIGHT,XP(B)
    • Try
      • Q(A);N_PINR(a),XP(c)
      • Threat
        • R1(C)
      • Vars
        • B(e);XQ(A)::S(E),XB(e)
      • Refutation
        • S(d);CHECK
  • Actual
    • Q(A);N_PINR(a)
    • Threat
      • QAR(A)
    • Vars
      • S(d);CHECK,N_GUARD::QAR(A),XS(d)
      • B(e);N_GUARD,XQ(A)::S(E),XP(c)
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