MESON Chess Problem Database

Problem Display
PID: 143618 (2b1r1Bb/2p1Q1B1/1p1r1q2/3N1R2/3k4/n1Rpp1NK/1P6/8 w - - 0 1)

Haring, Jacobus

5th HM., Die Schwalbe, 1984

2b1r1Bb/2p1Q1B1/1p1r1q2/3N1R2/3k4/n1Rpp1NK/1P6/8

#2

9 + 11

102 Probleemblad 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Qh4#
    • 1...Rd7
      • 2.Rf4#
    • 1...Rd8
      • 2.Qxe3#
      • 2.Qe4#
    • 1...Rf8
      • 2.Qxe3#
      • 2.Qe4#
    • 1...Rxg8
      • 2.Qxe3#
      • 2.Qe4#
    • 1...Bxf5+
      • 2.Sxf5#
    • 1...Ba6
      • 2.Rf4#
    • 1...Be6
      • 2.Qxf6#
    • 1...Bb7
      • 2.Rf4#
    • 1...d2
      • 2.Se2#
  • Tries
    • 1.Qxf6+?
      • 1...Re5
        • 2.Qh4#
        • 2.Qxe5#
      • 1...Rxf6!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Rxd3#
      • 1...Bxf5+
        • 2.Sxf5#
      • 1...Rxg8
        • 2.Qe4#
      • 1...Qe5
        • 2.Qh4#
      • 1...Rd5
        • 2.Sc6#
      • 1...Re6
        • 2.Rd5#
      • 1...Ba6
        • 2.Rf4#
      • 1...Be6
        • 2.Qxf6#
      • 1...d2
        • 2.Se2#
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(g);OGATE::QAR(G)
    • R(f);N_PINR(F)::R(F)
    • B(i);CHECK,XR(F)::S(C),XB(i)
    • B(i);N_PINR(F)::R(F)
    • B(i);S_CUTR(f),S_CUTR(j)::QAB(G),XQ(g)
    • P(b);N_GUARD::S(C)
  • Tries
    • Try
      • Q(G);CHECK,XQ(g)
      • Refutation
        • R(f);P_SPINR(f),XQ(G)
  • Actual
    • S(E);
    • Threat
      • R1(B),XP(b)
    • Vars
      • B(i);CHECK,XR(F)::S(C),XB(i)
      • R(j);N_GUARD,XB(I)::QAR1(G)
      • Q(g);OGATE::QAR(G)
      • R(f);N_GUARD::S(E)
      • R(f);N_PINR(F)::R1(F)
      • B(i);N_PINR(F)::R(F)
      • B(i);S_CUTR(f),S_CUTR(j)::QAB(G),XQ(g)
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