MESON Chess Problem Database

Problem Display
PID: 107906 (5Q2/1B4p1/NNn5/4kbP1/1R1b4/3p4/3B4/1K6 w - - 0 1)

Chiasson, Joseph Emile

Apprenti Sorcier, 1991

5Q2/1B4p1/NNn5/4kbP1/1R1b4/3p4/3B4/1K6

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Qf4#
  • Tries
    • 1.Rb5+?
      • 1...Ke4
        • 2.Bxc6#
        • 2.Qxf5#
      • 1...Ke6
        • 2.Sc7#
        • 2.Bc8#
      • 1...Bc5!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Bxc6#
        • 2.Qf4#
        • 2.Qd5#
      • 1...Kxd6!
    • 1.Qxf5+?
      • 1...Kd6
        • 2.Sc8#
      • 1...Kxf5!
    • 1.Qf6+?
      • 1...Ke4
        • 2.Bxc6#
      • 1...gxf6!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qd5#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kd6
        • 2.Sc4#
      • 1...Bxb6
        • 2.Bf4#
      • 1...Sxb4
        • 2.Sc4#
      • 1...Be4
        • 2.Sc4#
        • 2.Bf4#
      • 1...Be6
        • 2.Qf4#
      • 1...Se7
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(d);OGATE,SBLOCK::QAB1(H)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(c);S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK,XB(d)
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • K(c);P-FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINB(b),P_SPINS(e)::B(G),XS(e)
      • Refutation
        • P(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAR1(H)
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b),P_SPINS(e)::QAB1(H)
      • K(c);S_FLIGHT::S(F)
      • B(b);XS(F)::B(B)
      • S(e);XR(C)::S(F)
      • B(d);OGATE,SBLOCK::QAB1(H)
      • S(e);::S(F)
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