MESON Chess Problem Database

Problem Display
PID: 210083 (b7/B3Q3/8/5B1p/R4P2/3Kpk2/3R3P/5n2 w - - 0 1)

Brill, Robert C

Suomen Shakki, 1960

b7/B3Q3/8/5B1p/R4P2/3Kpk2/3R3P/5n2

#2

8 + 5

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be4+
      • 2.Qxe4#
    • 1...Bb7
      • 2.Qxb7#
    • 1...Sxh2
      • 2.Qxe3#
    • 1...Sg3
      • 2.Qxe3#
    • 1...exd2
      • 2.Qe2#
    • 1...e2
      • 2.Qxe2#
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qxh5#
        • 2.Qxa8#
      • 1...Be4+
        • 2.Qxe4#
      • 1...Sxh2
        • 2.Qxe3#
      • 1...exd2
        • 2.Qe2#
        • 2.Qxa8#
      • 1...e2
        • 2.Qxe2#
        • 2.Qxa8#
      • 1...Bd5
        • 2.Qxh5#
      • 1...Bc6
        • 2.Qxh5#
        • 2.Qxc6#
      • 1...Bb7
        • 2.Qxh5#
      • 1...Sg3
        • 2.Qxe3#
      • 1...h4
        • 2.Qh5#
        • 2.Qxa8#
      • 1...Sxd2!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxh5#
      • 1...Be4+
        • 2.Bxe4#
      • 1...Sxd2
        • 2.Qg3#
      • 1...Sxh2
        • 2.Qh3#
      • 1...exd2
        • 2.Qf2#
      • 1...e2
        • 2.Qf2#
      • 1...Sg3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(e);CHECK,N_GUARD::QAB1(H),XB(e)
    • B(e);N_GUARD::QAB(H),XB(e)
    • S(a);N_GUARD,XP(B)::QAR1(H),XP(b)
    • S(a);N_GUARD::QAR1(H),XP(b)
    • P(b);OGATE,XR(A)::QAB1(H)
    • P(b);OGATE::QAB1(H),XP(b)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);CHECK,N_GUARD::QAB1(H),XB(e)
        • S(a);N_GUARD,XP(B)::QAR1(H),XP(b)
        • B(e);::QAB(H),XP(d)
        • S(a);N_GUARD::QAR1(H),XP(b)
      • Refutation
        • S(a);XR(A)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XP(d)
    • Vars
      • B(e);CHECK,N_GUARD::B(F),XB(e)
      • S(a);N_GUARD,XR(A)::QAR1(H)
      • S(a);N_GUARD,XP(B)::QAR2(H)
      • P(b);N_GUARD,XR(A)::QAR1(H)
      • P(b);N_GUARD::QAR1(H)
      • S(a);N_GUARD::QAR1(H),XS(a)
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