MESON Chess Problem Database

Problem Display
PID: 243429 (8/1K3Np1/1B1Rp3/7Q/1n2kp2/8/8/1N2b2b w - - 0 1)

Beale, John Lindsay

Chess World (The), 1950

8/1K3Np1/1B1Rp3/7Q/1n2kp2/8/8/1N2b2b

#2

6 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Sxd2#
    • 1...Bf2
      • 2.Sd2#
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bg3
      • 2.Sd2#
      • 2.Sc3#
    • 1...Bh4
      • 2.Sd2#
      • 2.Sc3#
    • 1...Bf3
      • 2.Qg6#
      • 2.Qe5#
    • 1...f3
      • 2.Qg4#
      • 2.Qe5#
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rd4#
      • 1...Bg3
        • 2.Sd2#
      • 1...f3
        • 2.Qg4#
      • 1...Bf2
        • 2.Sd2#
        • 2.Sc3#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Bf3
        • 2.Qxe6#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd5
        • 2.Rxe6#
      • 1...Sc6
        • 2.Qd3#
      • 1...e5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(A),XB(a)
  • Actual
    • Q(B);
    • Threat
      • R1(D)
    • Vars
      • B(a);N_GUARD::S(A)
      • P(e);OGATEB::QAR2(B)
      • B(a);N_GUARD::S(A),XB(a)
      • B(b);SBLOCK::QAR2(B),XP(f)
      • S(c);N_GUARD::QAB1(B)
      • S(c);SBLOCK::R(D),XP(f)
      • P(f);SBLOCK::S(F)
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