MESON Chess Problem Database

Problem Display
PID: 36049 (8/7p/5k1p/R4N1K/8/p7/Bpp5/1QR5 w - - 0 1)

Speckmann, Werner

2nd Prize, Schach, 1962

8/7p/5k1p/R4N1K/8/p7/Bpp5/1QR5

#2

6 + 6

3747 FIDE Album (1962-1964) 1968
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...bxc1Q
      • 2.Qb6#
    • 1...bxc1S
      • 2.Qa1#
      • 2.Qb6#
    • 1...bxc1B
      • 2.Qb6#
    • 1...bxc1R
      • 2.Qb6#
    • 1...cxb1Q
      • 2.Rc6#
    • 1...cxb1S
      • 2.Rc6#
    • 1...cxb1B
      • 2.Rc6#
    • 1...cxb1R
      • 2.Rc6#
  • Tries
    • 1.Kg4?
      • 1...Kg6
        • 2.Ra6#
      • 1...bxc1Q
        • 2.Qb6#
      • 1...bxc1S
        • 2.Qb6#
      • 1...bxc1B
        • 2.Qb6#
      • 1...bxc1R
        • 2.Qb6#
      • 1...cxb1Q
        • 2.Rc6#
      • 1...cxb1S
        • 2.Rc6#
      • 1...cxb1B
        • 2.Rc6#
      • 1...cxb1R
        • 2.Rc6#
      • 1...h5+!
  • Keys
    • 1.Bg8!
      • 1...bxc1Q
        • 2.Qb6#
      • 1...bxc1S
        • 2.Qa1#
        • 2.Qb6#
      • 1...bxc1B
        • 2.Qb6#
      • 1...bxc1R
        • 2.Qb6#
      • 1...cxb1Q
        • 2.Rc6#
      • 1...cxb1S
        • 2.Rc6#
      • 1...cxb1B
        • 2.Rc6#
      • 1...cxb1R
        • 2.Rc6#
      • 1...a2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE,XR(B)::QAR(A)
    • P(b);OGATE,XQ(A)::R(B)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(d);P-FLIGHT::R(D)
        • P(a);OGATE,XR(B)::QAR(A)
        • P(b);OGATE,XQ(A)::R(B)
      • Refutation
        • P(e);CHECK
  • Actual
    • B(C);
    • Vars
      • P(a);OGATE,XR(B)::QAR(A)
      • P(b);OGATE,XQ(A)::R(B)
      • P(c);N_GUARD::QAB(A),XP(a)
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