MESON Chess Problem Database

Problem Display
PID: 6329 (b1QbB3/rr1N1K2/k4p2/P2P1P2/1P6/2R5/8/8 w - - 0 1)

Akerblom, Johan Axel

Svenska Dagbladet, 1928

b1QbB3/rr1N1K2/k4p2/P2P1P2/1P6/2R5/8/8

#2

9 + 6

3098 FIDE Album (1914-1944) (I) 1971
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bb6
      • 2.Qc4#
    • 1...Bc7
      • 2.Sc5#
    • 1...Be7
      • 2.Sb8#
  • Tries
    • 1.Ra3?
      • 1...Bxa5
        • 2.Rxa5#
      • 1...Bb6
        • 2.Qc4#
      • 1...Bc7
        • 2.Sc5#
      • 1...Be7
        • 2.Sb8#
      • 1...Kb5!
    • 1.Rc6+?
      • 1...Bb6
        • 2.Rxb6#
      • 1...Kb5!
    • 1.Rc7?
      • threat
        • 2.Sc5#
        • 2.Sb8#
      • 1...Bxc7
        • 2.Sc5#
      • 1...Be7
        • 2.Sb8#
      • 1...Kb5!
    • 1.Qc6+?
      • 1...Bb6
        • 2.Qc4#
      • 1...Rb6!
  • Keys
    • 1.Rb3!
      • 1...Kb5
        • 2.Qc6#
      • 1...Bxa5
        • 2.b5#
      • 1...Bb6
        • 2.Qc4#
      • 1...Bc7
        • 2.Sc5#
      • 1...Be7
        • 2.Sb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);::QAB(H)
    • B(f);N_PINS(F)::S(F)
  • Tries
    • Try
      • R(A);
      • Vars
        • B(f);OGATE,P_SPINB(f),XP(C)::R1(A),XB(f)
        • B(f);::QAB(H)
        • B(f);N_PINS(F)::S(F)
      • Refutation
        • K(a);N_SPINR(d),S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(A),XB(f)
      • Refutation
        • K(a);N_SPINR(d),S_FLIGHT
    • Try
      • R(A);N_SPINS(F)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XR(A)::S(F)
        • B(f);::S(F)
      • Refutation
        • K(a);N_SPINR(d),S_FLIGHT
    • Try
      • Q(H);CHECK,N_PINR(d)
      • Vars
        • B(f);P_SPINB(f),S_CUTR(d)::QAB(H)
      • Refutation
        • R(d);P_SPINR(d)
  • Actual
    • R(A);
    • Vars
      • K(a);N_SPINR(d),S_FLIGHT::QAB1(H)
      • B(f);SBLOCK,XP(C)::P(B)
      • B(f);::QAB(H)
      • B(f);N_PINS(F)::S(F)
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