MESON Chess Problem Database

Problem Display
PID: 104542 (8/8/8/7K/5kN1/6N1/6n1/3Q2n1 w - - 0 1)

Picotte, Romeo

La Presse, 1934

8/8/8/7K/5kN1/6N1/6n1/3Q2n1

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qxg1?
      • threat
        • 2.Qf2#
      • 1...Kf3
        • 2.Qf2#
      • 1...Se1
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...Kxg3!
    • 1.Qd2+?
      • 1...Kf3
        • 2.Qf2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxg3!
    • 1.Qd4+?
      • 1...Kf3
        • 2.Qf2#
      • 1...Kxg3!
  • Keys
    • 1.Qd3!
      • 1...Sf3
        • 2.Se2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se2
        • 2.Sxe2#
      • 1...Sh3
        • 2.Se2#
      • 1...Se1
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);XS(a)
      • Threat
        • QAR2(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • S(b);N_GUARD::QAB1(A)
      • Refutation
        • K(c);P_SPINS(b),S_FLIGHT,XS(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • S(b);N_GUARD,P_SPINS(b)::QAB1(A),XS(b)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT,XS(B)
  • Actual
    • Q(A);
    • Vars
      • S(a);N_GUARD::S(B)
      • S(b);N_GUARD::QAB1(A),XS(b)
      • S(a);N_GUARD::S(B),XS(a)
      • S(b);N_GUARD::QAB1(A)
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