MESON Chess Problem Database

Problem Display
PID: 198567 (1K6/8/8/5p2/bQpBBP2/2N5/6RN/n2qk3 w - - 0 1)

Reilly, William Henry

Western Daily Mercury, 1919

(First published on Fri Feb 28 1919)

1K6/8/8/5p2/bQpBBP2/2N5/6RN/n2qk3

#2

8 + 6

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Rxe2#
    • 1...Qb3
      • 2.Re2#
    • 1...Qb1
      • 2.Re2#
    • 1...Qc1
      • 2.Re2#
    • 1...Qd2
      • 2.Rg1#
    • 1...Qxd4
      • 2.Re2#
  • Tries
    • 1.Sf3+?
      • 1...Kf1
        • 2.Rg1#
        • 2.Rf2#
      • 1...Qxf3!
    • 1.Sb1+?
      • 1...Qd2
        • 2.Qxd2#
      • 1...c3!
    • 1.Sxd1+?
      • 1...Kxd1
        • 2.Qd2#
        • 2.Qb1#
      • 1...c3!
    • 1.Sa2+?
      • 1...Qd2
        • 2.Qxd2#
      • 1...c3!
    • 1.Sxa4+?
      • 1...Qd2
        • 2.Qxd2#
      • 1...c3!
    • 1.Sb5+?
      • 1...Qd2
        • 2.Qxd2#
      • 1...c3!
    • 1.Sd5+?
      • 1...Qd2
        • 2.Qxd2#
      • 1...c3!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qh4#
      • 1...Qb3+
        • 2.Bb7#
      • 1...Qb1+
        • 2.Bxb1#
      • 1...Qxd4
        • 2.Re2#
      • 1...Qe2
        • 2.Rxe2#
      • 1...Qc2
        • 2.Bxc2#
      • 1...Qf3
        • 2.Bxf3#
      • 1...Qg4
        • 2.Bf3#
      • 1...Qh5
        • 2.Bf3#
      • 1...Qd2
        • 2.Rg1#
      • 1...Qd3
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD::R1(A),XQ(b)
    • Q(b);N_GUARD,P_PINQ(D)::R1(A)
    • Q(b);N_GUARD::R1(A)
    • Q(b);SBLOCK::R(A)
    • Q(b);N_GUARD,XB(E)::R1(A)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • Q(b);XS(B)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • S(C);CHECK,XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • S(C);CHECK,XB(d)
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • S(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::QAB1(D),XQ(b)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • Q(b);CHECK,N_GUARD::QAR(D)+B(F)
      • Q(b);CHECK,N_GUARD::QAR(D)+B(F),XQ(b)
      • Q(b);N_GUARD,XB(E)::R1(A)
      • Q(b);N_GUARD::R1(A),XQ(b)
      • Q(b);N_GUARD::QAR(D)+B(F),XQ(b)
      • Q(b);N_GUARD::QAR(D)+B(F)
      • Q(b);SBLOCK::R(A)
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