MESON Chess Problem Database

Problem Display
PID: 9503 (8/5pqN/5p2/2p5/1bpB1k2/4R2P/1QB1pr1P/1K2N3 w - - 0 1)

van Dijk, Johannes

1st Prize, St. Louis, 1904

8/5pqN/5p2/2p5/1bpB1k2/4R2P/1QB1pr1P/1K2N3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg3
      • 2.hxg3#
    • 1...Rg2
      • 2.Rf3#
    • 1...Rxh2
      • 2.Rf3#
    • 1...Rf3
      • 2.Rxf3#
    • 1...Bxe1
      • 2.Qb8#
    • 1...Bd2
      • 2.Qb8#
    • 1...Ba3
      • 2.Qb8#
    • 1...Bc3
      • 2.Qb8#
    • 1...cxd4
      • 2.Qxd4#
  • Tries
    • 1.Rc3?
      • threat
        • 2.Qc1#
      • 1...Bxc3
        • 2.Qb8#
      • 1...Qg3
        • 2.hxg3#
      • 1...Rf3
        • 2.Rxf3#
      • 1...Ba3
        • 2.Qb8#
      • 1...cxd4!
    • 1.Rg3?
      • threat
        • 2.Be3#
      • 1...Rxh2
        • 2.Rf3#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Rf3
        • 2.Sg2#
        • 2.Rxf3#
      • 1...Bd2
        • 2.Qb8#
      • 1...Bc3
        • 2.Qb8#
      • 1...c3
        • 2.Qc1#
      • 1...Qxg3!
  • Keys
    • 1.Ra3!
      • threat
        • 2.Be3#
      • 1...Rxh2
        • 2.Rf3#
      • 1...Bxe1
        • 2.Qb8#
      • 1...Bxa3
        • 2.Qb8#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Qg3
        • 2.hxg3#
      • 1...Rf3
        • 2.Rxf3#
      • 1...Bd2
        • 2.Qb8#
      • 1...Bc3
        • 2.Qb8#
      • 1...c3
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • Q(i);OGATE::P(E),XQ(i)
    • R(b);N_GUARD::R1(F)
    • R(b);N_GUARD,XP(E)::R1(F)
    • R(b);N_GUARD::R1(F),XR(b)
    • B(c);OGATE,XS(B)::QAB(C)
    • B(c);OGATE::QAB(C)
    • P(f);OGATE,XB(H)::QAR2(C),XP(f)
  • Tries
    • Try
      • R(F);
      • Threat
        • QAB(C)
      • Vars
        • B(c);OGATE,XR(F)::QAB(C)
        • Q(i);OGATE::P(E),XQ(i)
        • R(b);N_GUARD::R1(F),XR(b)
        • B(c);OGATE::QAB(C)
      • Refutation
        • P(f);XB(H)
    • Try
      • R(F);
      • Threat
        • B(H)
      • Vars
        • R(b);N_GUARD,XP(E)::R1(F)
        • P(f);OGATE,XB(H)::QAR2(C),XP(f)
        • B(c);OGATE::QAB(C)
        • P(d);S_CUTB(c)::QAB(C)
      • Refutation
        • Q(i);XR(F)
  • Actual
    • R(F);
    • Threat
      • B(H)
    • Vars
      • R(b);N_GUARD,XP(E)::R1(F)
      • B(c);OGATE,XS(B)::QAB(C)
      • B(c);OGATE,XR(F)::QAB(C)
      • P(f);OGATE,XB(H)::QAR2(C),XP(f)
      • Q(i);OGATE::P(E),XQ(i)
      • R(b);N_GUARD::R1(F),XR(b)
      • B(c);OGATE::QAB(C)
      • P(d);S_CUTB(c)::QAB(C)
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