MESON Chess Problem Database

Problem Display
PID: 103274 (8/8/K7/Bp2b2b/1R2Q3/3N4/p1Nk1P1R/q2r4 w - - 0 1)

Madsen, Arthur Valdemar

Midweek Sports Referee, 1931

8/8/K7/Bp2b2b/1R2Q3/3N4/p1Nk1P1R/q2r4

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.f3#
  • Tries
    • 1.Rb2+?
      • 1...Bc3
        • 2.Sxa1#
        • 2.Qe3#
        • 2.f3#
      • 1...b4!
    • 1.Rc4+?
      • 1...Bc3
        • 2.f3#
      • 1...b4
        • 2.Qe3#
      • 1...Qc3!
    • 1.f3+?
      • 1...Kc3
        • 2.Rxb5#
      • 1...Bxh2!
    • 1.f4+?
      • 1...Kc3
        • 2.Rxb5#
      • 1...Be2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rb2#
      • 1...Ke2
        • 2.f4#
      • 1...Kc3
        • 2.Rxb5#
      • 1...Qb2
        • 2.Rxb2#
      • 1...Bb2
        • 2.Rxb2#
      • 1...Bc3
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD,SBLOCK::R(C)+P(B)
  • Tries
    • Try
      • R(E);CHECK
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • R(E);CHECK
      • Vars
        • B(f);P_SPINB(f)::R(C)+P(B)
        • P(e);P_SPINP(e)::QAB1(F)
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • P(B);CHECK
      • Vars
        • K(d);S_FLIGHT::B(G)+R(E),XP(e)
      • Refutation
        • B(f);XR(C)
    • Try
      • P(B);CHECK
      • Vars
        • K(d);S_FLIGHT::B(G)+R(E),XP(e)
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • S(A);
    • Threat
      • B(G)+R(E),DCHECK
    • Vars
      • K(d);P-FLIGHT::R(C)+P(B)
      • K(d);S_FLIGHT::B(G)+R(E),XP(e)
      • Q(a);::B(G)+R(E),DCHECK,XQ(a)
      • B(f);::B(G)+R(E),DCHECK,XB(f)
      • B(f);N_GUARD,SBLOCK::R(C)+P(B)
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