MESON Chess Problem Database

Problem Display
PID: 6083 (2B5/r5p1/nP2Q3/R1pq3p/2k3rR/b1P1BN2/bP5p/2N4K w - - 0 1)

ten Cate, Pieter

2nd Prize, Dutch East Indies Chess Association, 1926-1927

2B5/r5p1/nP2Q3/R1pq3p/2k3rR/b1P1BN2/bP5p/2N4K

#2

11 + 11

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Bxe6#
    • 1...Re4
      • 2.Sd2#
      • 2.Se5#
      • 2.Rxe4#
    • 1...Rf4
      • 2.Rxf4#
    • 1...Rc7
      • 2.Bxa6#
    • 1...Rd7
      • 2.Bxa6#
    • 1...Re7
      • 2.Bxa6#
    • 1...Rf7
      • 2.Bxa6#
    • 1...Sb4
      • 2.Rxc5#
  • Tries
    • 1.Qxg4+?
      • 1...Qe4
        • 2.Be6#
        • 2.Qe6#
        • 2.Qxe4#
      • 1...Qd4
        • 2.Be6#
        • 2.Qe6#
      • 1...hxg4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qe2#
      • 1...Rg1+
        • 2.Bxg1#
      • 1...Qxe6
        • 2.Bxe6#
      • 1...cxd4
        • 2.Qxd5#
      • 1...Rg2
        • 2.Se5#
      • 1...Re4
        • 2.Sd2#
      • 1...Re7
        • 2.Bxa6#
      • 1...Bb1
        • 2.b3#
      • 1...Sb4
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(g);N_PINS(F),N_SPINQ(g),OGATE,XQ(J)::B(K),XQ(g)
    • R(e);OGATE::R(G),XR(e)
    • R(j);N_GUARD::B(K),XS(i)
    • S(i);N_GUARD,S_CUTB(c)::R1(H),XP(f)
  • Tries
    • Try
      • Q(J);CHECK,N_PINQ(g),XR(e)
      • Refutation
        • P(h);P_SPINP(h),XQ(J)
  • Actual
    • B(E);N_PINR(e)
    • Threat
      • QAB(J)
    • Vars
      • R(e);CHECK,OGATEB::R(G)+B(E),XR(e)
      • Q(g);N_PINS(F),N_SPINQ(g),OGATE,XQ(J)::B(K),XQ(g)
      • P(f);XB(E)::QAB1(J),XQ(g)
      • R(e);N_PINS(F)::S(F)
      • R(j);N_GUARD::B(K),XS(i)
      • B(a);N_GUARD::P(C)
      • S(i);N_GUARD,S_CUTB(c)::R1(H),XP(f)
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