MESON Chess Problem Database

Problem Display
PID: 210565 (7B/6QK/8/8/8/8/rb6/kr3BR1 w - - 0 1)

Thomas, Chr

Deutsche Schachblatter, 1916

7B/6QK/8/8/8/8/rb6/kr3BR1

#2

5 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf1
      • 2.Rxf1#
    • 1...Ra7
      • 2.Qxa7#
  • Tries
    • 1.Qxb2+?
      • 1...Rbxb2
        • 2.Be2#
        • 2.Bg2#
        • 2.Bd3#
        • 2.Bh3#
        • 2.Bc4#
        • 2.Bb5#
        • 2.Ba6#
      • 1...Raxb2!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Rxb1#
      • 1...Rxg1
        • 2.Qxg1#
      • 1...Ra3
        • 2.Qxb2#
      • 1...Ra4
        • 2.Qxb2#
      • 1...Ra5
        • 2.Qxb2#
      • 1...Ra6
        • 2.Qxb2#
      • 1...Ra7
        • 2.Qxa7#
      • 1...Ra8
        • 2.Qxb2#
      • 1...Rc1
        • 2.Rxc1#
      • 1...Rd1
        • 2.Rxd1#
      • 1...Re1
        • 2.Rxe1#
      • 1...Rf1
        • 2.Rxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,P_SPINR(b),XB(A)::R(B),XR(b)
    • R(c);OGATEB,P_PINQ(C)::QAR(C),XR(c)
  • Tries
    • Try
      • Q(C);CHECK,XB(d)
      • Refutation
        • R(c);P_SPINR(c),XQ(C)
  • Actual
    • B(A);P_PINR(b)
    • Threat
      • R1(B),XR(b)
    • Vars
      • R(b);N_SPINR(b),OGATE,XR(B)::QAR(C),XR(b)
      • R(c);N_GUARD::QAB1(C),XB(d)
      • R(c);OGATEB,P_PINQ(C)::QAR(C),XR(c)
      • R(b);OGATEB::R(B),XR(b)
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