MESON Chess Problem Database

Problem Display
PID: 218173 (k6K/Pp5R/5p2/8/3B4/1r2b3/Q7/n3R3 w - - 0 1)

Busack, Otto

Deutsche Schachzeitung, 1944

k6K/Pp5R/5p2/8/3B4/1r2b3/Q7/n3R3

#2

6 + 6

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qg8#
    • 1...Rb2
      • 2.Qg8#
    • 1...Ra3
      • 2.Qg8#
    • 1...Rd3
      • 2.Qg8#
    • 1...Rb4
      • 2.Qg8#
    • 1...Rb5
      • 2.Qg8#
    • 1...Bc1
      • 2.Re8#
    • 1...Bg1
      • 2.Re8#
    • 1...Bd2
      • 2.Re8#
    • 1...Bf2
      • 2.Re8#
    • 1...Bxd4
      • 2.Re8#
    • 1...Bg5
      • 2.Re8#
    • 1...Bh6
      • 2.Re8#
    • 1...b5
      • 2.Qg2#
    • 1...b6
      • 2.Qg2#
  • Tries
    • 1.Qxb3?
      • threat
        • 2.Qg8#
        • 2.Qxb7#
      • 1...Bxd4
        • 2.Qxb7#
      • 1...Bf4
        • 2.Qxb7#
      • 1...Bh6
        • 2.Re8#
        • 2.Qxb7#
      • 1...b5
        • 2.Qd5#
        • 2.Qg8#
      • 1...b6
        • 2.Qd5#
        • 2.Qg8#
      • 1...Sxb3!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rc8#
      • 1...Rc3
        • 2.Qg8#
      • 1...Bf4
        • 2.Re8#
      • 1...b5
        • 2.Qg2#
      • 1...b6
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • R(b);OGATE::QAR(B)
    • B(c);OGATE::R(A)
    • B(c);OGATE,XB(C)::R(A)
    • P(e);OGATEB::QAB(B)
  • Tries
    • Try
      • Q(B);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XB(C)::QAB1(B),XP(e)
        • B(c);::QAB1(B),XP(e)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • R(b);OGATE::QAR(B)
      • B(c);OGATE::R(A)
      • P(e);OGATEB::QAB(B)
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