MESON Chess Problem Database

Problem Display
PID: 239830 (b7/3r4/B3p1Q1/r2n2Pp/1pN1N1RK/5k2/2R2p2/6b1 w - - 0 1)

Haring, Jacobus

Themes-64, 1968

b7/3r4/B3p1Q1/r2n2Pp/1pN1N1RK/5k2/2R2p2/6b1

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Rxf2#
    • 1...Sf4
      • 2.Rg3#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Qf6#
      • 1...Se3
        • 2.Se5#
      • 1...Sf4
        • 2.Rg3#
      • 1...Sb6
        • 2.Qf6#
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sc7
        • 2.Qf6#
      • 1...Se7!
    • 1.Qf5+?
      • 1...Sf4
        • 2.Rg3#
        • 2.Qxf4#
      • 1...exf5!
    • 1.Qf6+?
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sxf6!
  • Keys
    • 1.Sed6!
      • threat
        • 2.Qe4#
      • 1...Sc3
        • 2.Qd3#
      • 1...Se3
        • 2.Sd2#
      • 1...Sf4
        • 2.Rg3#
      • 1...Sb6
        • 2.Qd3#
      • 1...Sf6
        • 2.Qd3#
      • 1...Sc7
        • 2.Qd3#
      • 1...Se7
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::R1(A),XP(b)
    • S(f);SBLOCK::R1(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(H)
      • Vars
        • S(f);N_GUARD::QAR(H)
        • S(f);SBLOCK::S(B)
        • S(f);SBLOCK::R1(D)
        • S(f);N_GUARD::QAR(H),XS(f)
      • Refutation
        • S(f);
    • Try
      • Q(H);CHECK
      • Refutation
        • P(h);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAR1(H),XS(f)
      • Refutation
        • S(f);XQ(H)
  • Actual
    • S(C);
    • Threat
      • QAB1(H)
    • Vars
      • S(f);N_GUARD::QAR2(H)
      • S(f);SBLOCK::S(B)
      • S(f);SBLOCK::R1(D)
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