MESON Chess Problem Database

Problem Display
PID: 35048 (2K5/6p1/4Rprb/6pq/B4P1n/5kP1/2Q2PpR/2n5 w - - 0 1)

Albarda, Johannes

1st Prize, Probleemblad TT, 1948

2K5/6p1/4Rprb/6pq/B4P1n/5kP1/2Q2PpR/2n5

#2

8 + 10

3105 FIDE Album (1945-1955) 1964
6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Bc6#
    • 1...Sa2
      • 2.Qe2#
    • 1...Se2
      • 2.Qxe2#
    • 1...Sb3
      • 2.Qe2#
    • 1...Sd3
      • 2.Qe2#
    • 1...g4
      • 2.Re3#
  • Tries
    • 1.Qd1+?
      • 1...Se2
        • 2.Qxe2#
      • 1...Kxf2!
    • 1.Qe4+?
      • 1...Kg4
        • 2.f5#
      • 1...Kxf2!
  • Keys
    • 1.f5!
      • 1...Kg4
        • 2.Qe4#
      • 1...Sxf5
        • 2.Qxf5#
      • 1...Se2
        • 2.Qxe2#
      • 1...g1Q
        • 2.Qe4#
      • 1...g1S
        • 2.Qe4#
      • 1...g1B
        • 2.Qe4#
      • 1...g1R
        • 2.Qe4#
      • 1...Qg4
        • 2.Re3#
      • 1...Sa2
        • 2.Qe2#
      • 1...Sb3
        • 2.Qe2#
      • 1...Sd3
        • 2.Qe2#
      • 1...g4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(f);P_PINR(G),SBLOCK::B(E)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • P(e);SBLOCK::R1(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b),XP(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(A)+P(F)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(b),XP(B)
  • Actual
    • P(F);
    • Vars
      • K(c);S_FLIGHT::QAR2(A)
      • S(d);OGATE,XP(F)::QAR2(A),XS(d)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • P(b);::QAB1(A)
      • Q(f);SBLOCK::R1(G)
      • S(a);N_GUARD::QAB1(A)
      • P(e);SBLOCK::B(E)
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