MESON Chess Problem Database

Problem Display
PID: 80622 (8/8/8/3BP3/8/1P6/8/kbK4Q w - - 0 1)

Stojnic, Dragan

2nd Comm., Mat Plus, 1997

8/8/8/3BP3/8/1P6/8/kbK4Q

#2

5 + 2

5929 Mat Plus Special Issue 2006
3713 Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qxb1#
      • 1...Ka2
        • 2.Qa4#
      • 1...Ba2
        • 2.Qd4#
      • 1...Bc2
        • 2.Qa4#
      • 1...Bd3
        • 2.Qa4#
      • 1...Bxe4!
    • 1.Qg1?
      • 1...Ka2
        • 2.Qa7#
      • 1...Ba2
        • 2.Qd4#
      • 1...Bc2
        • 2.Qa7#
      • 1...Be4
        • 2.Qa7#
      • 1...Bf5
        • 2.Qa7#
      • 1...Bg6
        • 2.Qa7#
      • 1...Bh7
        • 2.Qa7#
      • 1...Bd3!
    • 1.Qh4?
      • 1...Ka2
        • 2.Qa4#
      • 1...Ba2
        • 2.Qd4#
      • 1...Bc2
        • 2.Qa4#
      • 1...Bd3
        • 2.Qa4#
      • 1...Bf5
        • 2.Qa4#
      • 1...Bg6
        • 2.Qa4#
      • 1...Bh7
        • 2.Qa4#
      • 1...Be4!
    • 1.Qh8?
      • 1...Ka2
        • 2.Qa8#
      • 1...Ba2
        • 2.e6#
      • 1...Bc2
        • 2.Qa8#
      • 1...Be4
        • 2.Qa8#
      • 1...Bf5
        • 2.Qa8#
      • 1...Bg6
        • 2.Qa8#
      • 1...Bh7
        • 2.Qa8#
      • 1...Bd3!
  • Keys
    • 1.Qe1!
      • 1...Ka2
        • 2.Qa5#
      • 1...Ba2
        • 2.Qc3#
      • 1...Bc2
        • 2.Qa5#
      • 1...Bd3
        • 2.Qa5#
      • 1...Be4
        • 2.Qa5#
      • 1...Bf5
        • 2.Qa5#
      • 1...Bg6
        • 2.Qa5#
      • 1...Bh7
        • 2.Qa5#

Anticipated by 11803(1972)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B),XB(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(b);SBLOCK::QAB(B)
        • B(b);N_GUARD::QAR(B)
      • Refutation
        • B(b);XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR(B)
        • B(b);SBLOCK::QAB(B)
        • B(b);N_GUARD::QAR(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(b);SBLOCK::QAB(B)
        • B(b);N_GUARD::QAR(B)
      • Refutation
        • B(b);
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR(B)
        • B(b);SBLOCK::QAB(B)+P(E)
        • B(b);N_GUARD::QAB(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR(B)
      • B(b);SBLOCK::QAB(B)
      • B(b);N_GUARD::QAR(B)
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