MESON Chess Problem Database

Problem Display
PID: 53169 (B2N4/2Knp3/8/2p1k1p1/6p1/4N1P1/3P1B2/1b5Q w - - 0 1)

Rayner, James

1st Prize, Boys' Newspaper, 0000

B2N4/2Knp3/8/2p1k1p1/6p1/4N1P1/3P1B2/1b5Q

#2

8 + 7

15 British Chess Magazine 1881
15 British Chess Magazine 1898

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...Ba2
      • 2.Qa1#
    • 1...Bc2
      • 2.Qa1#
    • 1...Bd3
      • 2.Qa1#
    • 1...Be4
      • 2.Qa1#
    • 1...Bf5
      • 2.Qa1#
    • 1...Bg6
      • 2.Qa1#
    • 1...Bh7
      • 2.Qa1#
    • 1...Sb6
      • 2.Qh8#
    • 1...Sb8
      • 2.Qh8#
    • 1...Sf8
      • 2.Qh8#
  • Tries
    • 1.Qxb1?
      • threat
        • 2.Sxg4#
        • 2.Qa1#
        • 2.Qb2#
      • 1...Kd4
        • 2.Sc6#
        • 2.Qe4#
      • 1...Sf6
        • 2.Sc4#
        • 2.Qa1#
        • 2.Qb2#
      • 1...c4
        • 2.Sxg4#
      • 1...Kf6!
    • 1.Qc1?
      • threat
        • 2.Qb2#
        • 2.Qc3#
      • 1...Kd4
        • 2.Qc3#
      • 1...Bc2
        • 2.Qb2#
        • 2.Qa1#
      • 1...c4
        • 2.Qc3#
      • 1...Kf6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sxg4#
      • 1...Kd4
        • 2.Sc6#
      • 1...Kf6
        • 2.Qh8#
      • 1...Bxe4
        • 2.Qa1#
      • 1...Sf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • K(d);S_FLIGHT::QAR1(A)
    • B(a);OGATE::QAB(A)
    • S(f);N_GUARD::QAB(A)
  • Tries
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);::S(D),XP(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
        • P(c);::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(G);
    • Threat
      • S(D),XP(b)
    • Vars
      • K(d);S_FLIGHT::S(H)
      • K(d);S_FLIGHT::QAB(A)
      • B(a);OGATE,SBLOCK,XB(G)::QAB(A)
      • S(f);SBLOCK::S(D)
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