MESON Chess Problem Database

Problem Display
PID: 230196 (B2nQ3/p7/R1qp4/2k5/2N5/P1N5/1P6/K1R5 w - - 0 1)

Whitehead, Cyril

Sunday Chronicle, 1948

(First published on Sun May 9 1948)

B2nQ3/p7/R1qp4/2k5/2N5/P1N5/1P6/K1R5

#2

9 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc6+?
      • 1...Kd4
        • 2.Rd1#
        • 2.Qe3#
        • 2.Qe4#
      • 1...Sxc6!
    • 1.Qxc6+?
      • 1...Kd4
        • 2.Rd1#
        • 2.Qd5#
      • 1...Sxc6!
  • Keys
    • 1.Sb5!
      • 1...Kxb5
        • 2.Ra5#
      • 1...Kd5
        • 2.Se3#
      • 1...Qxb5
        • 2.Qe3#
      • 1...Qxa8
        • 2.Se3#
        • 2.Sb6#
      • 1...Qxe8
        • 2.Scxd6#
      • 1...Qxa6
        • 2.b4#
      • 1...Qh1
        • 2.b4#
      • 1...Qg2
        • 2.Sd2#
        • 2.b4#
      • 1...Qf3
        • 2.Se3#
        • 2.b4#
      • 1...Qe4
        • 2.b4#
      • 1...Qd5
        • 2.b4#
      • 1...Qb7
        • 2.Se3#
        • 2.Sb6#
      • 1...Qd7
        • 2.Scxd6#
      • 1...Qb6
        • 2.Sd2#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sxb6#
        • 2.Scxd6#
        • 2.b4#
      • 1...Qc7
        • 2.Sd2#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Scxd6#
        • 2.b4#
      • 1...Qc8
        • 2.Sd2#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Scxd6#
        • 2.b4#
      • 1...Se6
        • 2.Qxc6#
      • 1...Sb7
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#
      • 1...d5
        • 2.Scd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK,XQ(b)
      • Refutation
        • S(e);XR(G)
    • Try
      • Q(I);CHECK,XQ(b)
      • Refutation
        • S(e);XQ(I)
  • Actual
    • S(E);
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINQ(b),XS(E)::R1(G)
      • K(a);P-FLIGHT,P_SPINQ(b)::S(F)
      • Q(b);SBLOCK,XS(E)::QAB(I)
      • Q(b);XQ(I)::R(B)+S(F),XP(c)
      • Q(b);P_PINP(D),XR(G)::P(C)
      • Q(b);P_PINR(B)::P(C)
      • Q(b);::P(C)
      • Q(b);::R(B)+S(F),XP(c)
      • S(e);N_GUARD::QAR1(I),XQ(b)
      • P(c);SBLOCK::R(B)+S(F)
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