MESON Chess Problem Database

Problem Display
PID: 156815 (3N2kr/3pB2p/1p4qP/1K6/8/3p4/8/5BR1 w - - 0 1)

Burke, R St G

British Chess Magazine, 1905

3N2kr/3pB2p/1p4qP/1K6/8/3p4/8/5BR1

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Rxg2#
    • 1...Qg3
      • 2.Rxg3#
    • 1...Qg4
      • 2.Rxg4#
    • 1...Qg5+
      • 2.Rxg5#
    • 1...Qg7
      • 2.Rxg7#
  • Tries
    • 1.Bd6?
      • 1...Qg5+
        • 2.Rxg5#
      • 1...d2
        • 2.Bc4#
      • 1...Qg2
        • 2.Rxg2#
      • 1...Qg3
        • 2.Rxg3#
      • 1...Qg4
        • 2.Rxg4#
      • 1...Qg7
        • 2.Rxg7#
      • 1...Qxg1!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Bd5#
      • 1...Qc6+
        • 2.Bxc6#
      • 1...Qxg2
        • 2.Rxg2#
      • 1...Qe4
        • 2.Bxe4#
      • 1...d5
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(c);OGATEB::R(B),XQ(c)
    • Q(c);CHECK,OGATEB::R(B),XQ(c)
    • Q(c);OGATE::R1(B),XQ(c)
  • Tries
    • Try
      • B(E);
      • Vars
        • Q(c);CHECK,OGATEB::R(B),XQ(c)
        • P(a);OGATE::B(A)
        • Q(c);OGATEB::R(B),XQ(c)
        • Q(c);OGATE::R1(B),XQ(c)
      • Refutation
        • Q(c);N_SPINQ(c),XR(B)
  • Actual
    • B(A);N_PINQ(c)
    • Threat
      • B(A)
    • Vars
      • Q(c);CHECK,OGATEB::R(B)+B(A),XQ(c)
      • Q(c);OGATE,P_SPINQ(c),XB(A)::R(B),XQ(c)
      • Q(c);OGATEB::R(B)+B(A),XQ(c)
      • P(d);::B(A),XP(d)
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