MESON Chess Problem Database

Problem Display
PID: 121118 (K3QR2/p2P4/1p1P1P2/qRB2k2/2N2p1P/5p1P/r1n3N1/8 w - - 0 1)

Prins, Hendrik

Chess Life & Review, 1988

K3QR2/p2P4/1p1P1P2/qRB2k2/2N2p1P/5p1P/r1n3N1/8

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Be3#
    • 1...Qd2
      • 2.Bd4#
    • 1...Qc3
      • 2.Bd4#
    • 1...Qb4
      • 2.Bxb4#
    • 1...Qa3
      • 2.Bxa3#
      • 2.Bb4#
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Qe5#
      • 1...Qe1
        • 2.Be3#
      • 1...Qc3!
    • 1.Rg8?
      • threat
        • 2.Qe5#
      • 1...Kxf6
        • 2.Qg6#
      • 1...Qc3
        • 2.Bd4#
      • 1...Qe1!
  • Keys
    • 1.h5!
      • threat
        • 2.Qe5#
      • 1...Kg5
        • 2.Qg6#
      • 1...Qe1
        • 2.Be3#
      • 1...Qc3
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_GUARD::R(E)+B(F)
    • Q(e);N_GUARD::R(E)+B(F),XQ(e)
  • Tries
    • Try
      • S(A);XP(d)
      • Threat
        • QAR1(K)
      • Vars
        • K(f);P-FLIGHT,XS(A)::QAB1(K)
        • Q(e);N_GUARD::R(E)+B(F)
      • Refutation
        • Q(e);
    • Try
      • R(L);
      • Threat
        • QAR1(K)
      • Vars
        • K(f);P-FLIGHT,XP(H)::QAR1(K)
        • Q(e);N_GUARD::R(E)+B(F)
      • Refutation
        • Q(e);
  • Actual
    • P(D);
    • Threat
      • QAR1(K)
    • Vars
      • K(f);P-FLIGHT::QAR1(K)
      • Q(e);N_GUARD::R(E)+B(F)
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