MESON Chess Problem Database

Problem Display
PID: 202612 (B1bR4/8/2p5/2kNB3/P1nn3R/3P4/8/3Q2bK w - - 0 1)

Bannikoff, A

Brisbane Courier, 1923

B1bR4/8/2p5/2kNB3/P1nn3R/3P4/8/3Q2bK

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Bxd4#
    • 1...Se3
      • 2.Bxd4#
    • 1...Sc2
      • 2.Rxc4#
    • 1...Se2
      • 2.Rxc4#
    • 1...Sb3
      • 2.Rxc4#
    • 1...Sf3
      • 2.Rxc4#
    • 1...Sb5
      • 2.Rxc4#
    • 1...Sf5
      • 2.Rxc4#
    • 1...Se6
      • 2.Rxc4#
  • Tries
    • 1.Qxg1?
      • threat
        • 2.Bxd4#
        • 2.Qxd4#
      • 1...Sxe5
        • 2.Qxd4#
      • 1...Bd7
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qxd4#
      • 1...Se3
        • 2.Bxd4#
      • 1...cxd5!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxc4#
        • 2.Qb4#
      • 1...Sxe5
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sxb3
        • 2.Rxc4#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Bd7
        • 2.Qxc4#
      • 1...Ba6
        • 2.Qb4#
      • 1...Sb2
        • 2.Bd6#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sd2
        • 2.Bd6#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sa3
        • 2.Bd6#
        • 2.Qxa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Se3
        • 2.Bxd4#
        • 2.Bd6#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sa5
        • 2.Bd6#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qb6#
      • 1...Sb6
        • 2.Bd6#
        • 2.Qa3#
        • 2.Qb4#
        • 2.Qxb6#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sc2
        • 2.Rxc4#
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • B(a);N_GUARD::B(G),XS(c)
    • S(b);S_CUTB(a)::B(G),XS(c)
    • S(c);OGATE::R1(E),XS(b)
  • Tries
    • Try
      • Q(A);P_PINS(c),XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XB(G)::QAB1(A),XS(c)
        • B(f);::QAB1(A),XS(c)
        • S(b);::QAB1(A),XS(c)
        • S(b);N_SPINS(c)::B(G),XS(c)
      • Refutation
        • P(e);XS(F)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • S(c);OGATE,XQ(A)::R1(E),XS(b)
      • P(e);OGATE,XS(F)::R1(I),XP(e)
      • B(f);::QAR1(A),XS(b)
      • B(f);::QAB1(A)
      • S(b);N_GUARD::B(G),XS(b)
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