MESON Chess Problem Database

Problem Display
PID: 60138 (8/1r3pB1/1pp2R2/1n2kN2/RN2b2K/2npQ1P1/4prp1/4b3 w - - 0 1)

van Dijk, Johannes

6th Prize, Brisbane Courier, 1928

8/1r3pB1/1pp2R2/1n2kN2/RN2b2K/2npQ1P1/4prp1/4b3

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4+
      • 2.Qxf4#
    • 1...Sd5
      • 2.Sxd3#
      • 2.Sxc6#
    • 1...Sa3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sd6
      • 2.Qd4#
    • 1...Sa7
      • 2.Qd4#
    • 1...Sc7
      • 2.Qd4#
  • Tries
    • 1.Rxc6+?
      • 1...Kxf5
        • 2.Qg5#
        • 2.g4#
      • 1...f6!
    • 1.Rd6+?
      • 1...Kxf5
        • 2.Qg5#
        • 2.g4#
      • 1...f6!
    • 1.Rg6+?
      • 1...Kxf5
        • 2.Qg5#
      • 1...f6!
    • 1.Rh6+?
      • 1...Kxf5
        • 2.Qg5#
        • 2.g4#
      • 1...f6!
    • 1.Qc5+?
      • 1...Bd5
        • 2.Sxd3#
        • 2.Sxc6#
      • 1...Sd5
        • 2.Sxc6#
      • 1...bxc5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Rxf7#
      • 1...Rf4+
        • 2.Qxf4#
      • 1...Rxf5
        • 2.Re6#
      • 1...Bxf5
        • 2.Re6#
      • 1...Bf3
        • 2.Qf4#
      • 1...Bd5
        • 2.Sxd3#
      • 1...Sd5
        • 2.Sxc6#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • R(c);CHECK,N_GUARD,P_PINP(B)::QAB1(A),XR(c)
    • S(h);N_GUARD::QAB1(A)
    • S(h);N_GUARD::QAB1(A),XS(h)
  • Tries
    • Try
      • R(G);CHECK,XP(k)
      • Refutation
        • P(m);P_SPINP(m)
    • Try
      • R(G);CHECK
      • Refutation
        • P(m);P_SPINP(m)
    • Try
      • R(G);CHECK
      • Vars
        • K(i);N_SPINB(g),P-FLIGHT,XS(F)::QAR1(A)
      • Refutation
        • P(m);P_SPINP(m)
    • Try
      • R(G);CHECK
      • Refutation
        • P(m);P_SPINP(m)
    • Try
      • Q(A);CHECK,N_PINB(g)
      • Vars
        • S(e);P_SPINS(e)::S(D),XP(k)
      • Refutation
        • P(j);XQ(A)
  • Actual
    • Q(A);N_PINB(g)
    • Threat
      • B(H)+R(G),XP(m)
    • Vars
      • R(c);CHECK,N_GUARD,P_PINP(B)::QAB1(A),XR(c)
      • R(c);P_PINP(B),SBLOCK,XS(F)::B(H)+R(G),DCHECK
      • B(g);SBLOCK,XS(F)::B(H)+R(G),DCHECK
      • B(g);S_CUTR(c)::QAB1(A)
      • B(g);N_GUARD,SBLOCK::S(D),XP(f)
      • S(e);SBLOCK,S_CUTB(g)::S(D),XP(k)
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