MESON Chess Problem Database

Problem Display
PID: 259131 (1R4bq/8/1Q6/P4B2/2p2n2/2k1P3/n1pN3R/K1b5 w - - 0 1)

Nield, Joshua

Western Morning News, 1923

(First published on Sat Jun 16 1923)

1R4bq/8/1Q6/P4B2/2p2n2/2k1P3/n1pN3R/K1b5

#2

8 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qf6
      • 2.Qxf6#
    • 1...Qxh2
      • 2.Qd4#
    • 1...Qh3
      • 2.Qd4#
      • 2.Qf6#
    • 1...Qh4
      • 2.Qd4#
    • 1...Qh5
      • 2.Qd4#
      • 2.Qf6#
    • 1...Qh6
      • 2.Qd4#
    • 1...Qh7
      • 2.Qd4#
      • 2.Qf6#
    • 1...Bb2+
      • 2.Qxb2#
    • 1...Bxd2
      • 2.Qb2#
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sd3
      • 2.Se4#
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qxc2#
      • 1...Bb2+
        • 2.Qxb2#
      • 1...cxb1Q+
        • 2.Sxb1#
      • 1...cxb1R+
        • 2.Sxb1#
      • 1...cxb1S
        • 2.Sxb1#
      • 1...cxb1B
        • 2.Sxb1#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sd3
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(h);N_GUARD::QAB1(G),XQ(h)
    • Q(h);N_GUARD::QAB(G),XQ(h)
    • Q(h);N_GUARD,XR(C)::QAB1(G)
    • Q(h);N_GUARD::QAB1(G)
    • B(a);CHECK,N_GUARD::QAB1(G),XB(a)
    • B(a);N_GUARD,XS(B)::QAB1(G)
    • S(b);N_GUARD::QAB1(G),XS(b)
    • S(f);SBLOCK::S(B)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XP(c)
    • Vars
      • B(a);CHECK,N_GUARD::QAB1(G),XB(a)
      • P(c);CHECK,XQ(G)::S(B),XQ(c)
      • P(c);CHECK,XQ(G)::S(B),XR(c)
      • P(c);XQ(G)::S(B),XS(c)
      • P(c);XQ(G)::S(B),XB(c)
      • S(b);N_GUARD::QAB1(G),XS(b)
      • S(f);SBLOCK::S(B)
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