MESON Chess Problem Database

Problem Display
PID: 109736 (3b3R/3pk1p1/4B1K1/5P2/2p5/8/7Q/8 w - - 0 1)

Ylijoki, Marko

Suomen Tehtavaniekat, 2006

3b3R/3pk1p1/4B1K1/5P2/2p5/8/7Q/8

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Qh4#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Bxc4#
        • 2.Bd5#
        • 2.Bf7#
      • 1...dxe6
        • 2.Qxe6#
      • 1...c3
        • 2.Ba2#
        • 2.Bb3#
        • 2.Bc4#
        • 2.Bd5#
        • 2.Bf7#
      • 1...d5
        • 2.Bc8#
      • 1...d6
        • 2.Qxg7#
      • 1...Bc7!
    • 1.Qb8?
      • 1...dxe6
        • 2.Qxd8#
      • 1...Bc7
        • 2.Qf8#
      • 1...Ba5
        • 2.Re8#
        • 2.Qf8#
      • 1...Bb6
        • 2.Re8#
        • 2.Qf8#
      • 1...d5
        • 2.Qb4#
        • 2.Qxd8#
      • 1...d6
        • 2.Qxd8#
      • 1...c3!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qxd7#
      • 1...dxe6
        • 2.Qxd8#
      • 1...d5
        • 2.Qb4#
      • 1...d6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);OGATE,P_SPINP(b),XB(C)::QAR1(A),XP(b)
        • P(b);OGATE::QAR(A)+B(C)
        • P(b);SBLOCK::QAR2(A),XP(d)
      • Refutation
        • B(e);
    • Try
      • Q(A);
      • Vars
        • P(b);XB(C)::QAB1(A),XB(e)
        • B(e);OGATE::QAB1(A)
        • P(b);::QAB1(A),XB(e)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • P(b);OGATE,XB(C)::QAB1(A),XB(e)
      • P(b);N_GUARD::QAB(A)
      • P(b);SBLOCK::QAB(A)
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