MESON Chess Problem Database

Problem Display
PID: 77282 (1n6/p3p3/Np1kB2K/3PR3/8/4Q2b/7B/1n5q w - - 0 1)

Hicks, GJ

The Tablet, 1950

(First published on Sat Jan 21 1950)

1n6/p3p3/Np1kB2K/3PR3/8/4Q2b/7B/1n5q

#2

7 + 8

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qc1
      • 2.Re4#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Qd1
      • 2.Re4#
      • 2.Rf5#
      • 2.Rg5#
      • 2.Rh5#
    • 1...Sd2
      • 2.Qa3#
    • 1...Sa3
      • 2.Qxa3#
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Qxb6+?
      • 1...Sc6
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qxc6#
      • 1...axb6!
    • 1.Qc3?
      • threat
        • 2.Qb4#
        • 2.Qc7#
      • 1...Qc1+
        • 2.Re3#
      • 1...Qxd5
        • 2.Qc7#
      • 1...Qxh2
        • 2.Qc7#
      • 1...Bxe6
        • 2.Qc7#
      • 1...Sxa6
        • 2.Qc6#
      • 1...Qe4
        • 2.Rxe4#
        • 2.Qc7#
      • 1...Qe1
        • 2.Rxe1#
        • 2.Qc7#
      • 1...Qg1
        • 2.Qc7#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd7
        • 2.Qc6#
        • 2.Qc7#
      • 1...Sxc3!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qc7#
      • 1...Qxc1+
        • 2.Re3#
      • 1...Sxa6
        • 2.Qc6#
      • 1...Sc3
        • 2.Qa3#
      • 1...Sc6
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(b);N_GUARD::B(A)+R(D),XQ(b)
    • S(a);N_GUARD::QAB(B)
    • S(a);N_GUARD::QAB(B),XS(a)
    • P(d);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK,XP(d)
      • Refutation
        • P(f);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,N_GUARD::B(A)+R(D)
        • Q(b);XP(C)::QAB1(B)
        • Q(b);XB(A)::QAB1(B)
        • B(c);P_PINB(A),XB(F)::QAB1(B)
        • S(h);N_GUARD,XS(E)::QAR1(B)
        • Q(b);::QAB1(B)
        • S(h);N_GUARD::QAR1(B),XS(h)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • Q(b);CHECK,N_GUARD,XQ(B)::B(A)+R(D)
      • S(h);N_GUARD,XS(E)::QAR1(B)
      • S(a);N_GUARD::QAB(B)
      • S(h);N_GUARD::QAR1(B),XS(h)
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