MESON Chess Problem Database

Problem Display
PID: 198531 (8/2N5/B2p4/qr1R3K/n1k5/P5pQ/P6n/bN4B1 w - - 0 1)

Reilly, William Henry

Western Daily Mercury, 1919

(First published on Fri Jan 31 1919)

8/2N5/B2p4/qr1R3K/n1k5/P5pQ/P6n/bN4B1

#2

9 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Bxb5#
    • 1...Qd2
      • 2.Bxb5#
    • 1...Qc3
      • 2.Bxb5#
    • 1...Sf1
      • 2.Qxf1#
    • 1...Sf3
      • 2.Qf1#
    • 1...Sg4
      • 2.Qf1#
    • 1...Sc3
      • 2.Sd2#
    • 1...g2
      • 2.Qb3#
      • 2.Qd3#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qe2#
      • 1...Qxc7
        • 2.Bxb5#
      • 1...Qe1
        • 2.Bxb5#
      • 1...Qd2
        • 2.Bxb5#
      • 1...Qc3
        • 2.Bxb5#
      • 1...Sb2
        • 2.Qe4#
      • 1...Sc3
        • 2.Sd2#
      • 1...Sc5!
    • 1.Qg4+?
      • 1...Bd4
        • 2.Qe2#
        • 2.Qxd4#
      • 1...Sxg4!
    • 1.Qf5?
      • threat
        • 2.Qd3#
      • 1...Qd2
        • 2.Bxb5#
      • 1...Qc3
        • 2.Bxb5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sb2
        • 2.Rd4#
        • 2.Qe4#
        • 2.Qf4#
      • 1...Sc5!
    • 1.Qh4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sg4!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe2#
      • 1...Qxc7
        • 2.Bxb5#
      • 1...Sc5
        • 2.Rd4#
      • 1...Qe1
        • 2.Bxb5#
      • 1...Qd2
        • 2.Bxb5#
      • 1...Qc3
        • 2.Bxb5#
      • 1...Be5
        • 2.Rxd6#
      • 1...Sb2
        • 2.Qe4#
      • 1...Sc3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(f);N_GUARD::B(H),XR(g)
    • S(b);N_GUARD::QAB(E),XS(b)
    • S(b);N_GUARD::QAB(E)
    • S(d);SBLOCK,S_CUTQ(f)::S(A)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB(E)
      • Vars
        • Q(f);N_GUARD,XS(I)::B(H),XR(g)
        • Q(f);N_GUARD::B(H),XR(g)
        • S(d);S_CUTB(a)::QAR2(E)
        • S(d);SBLOCK,S_CUTQ(f)::S(A)
      • Refutation
        • S(d);N_PINR(F)
    • Try
      • Q(E);CHECK
      • Refutation
        • S(b);XQ(E)
    • Try
      • Q(E);N_SPINR(F)
      • Threat
        • QAB1(E)
      • Vars
        • Q(f);N_GUARD::B(H),XR(g)
        • B(a);N_GUARD::R1(F),XB(a)
      • Refutation
        • S(d);
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(E),XB(a)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • Q(f);N_GUARD,XS(I)::B(H),XR(g)
      • S(d);N_PINR(F),SBLOCK::QAB(E)+R(F),DCHECK
      • Q(f);N_GUARD::B(H),XR(g)
      • B(a);N_PINR(F)::QAB(E)+R(F),XP(h)
      • S(d);S_CUTB(a)::QAR2(E)
      • S(d);SBLOCK,S_CUTQ(f)::S(A)
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