MESON Chess Problem Database

Problem Display
PID: 234926 (b2r4/1R3Bp1/3B4/1N6/5p2/R1bnk3/1nQ2NP1/6K1 w - - 0 1)

Haring, Jacobus

1st Prize, Magyar Sakkelet, 1984

b2r4/1R3Bp1/3B4/1N6/5p2/R1bnk3/1nQ2NP1/6K1

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qxd3#
    • 1...Sc4
      • 2.Qxd3#
    • 1...Sc1
      • 2.Sg4#
    • 1...Se1
      • 2.Sg4#
    • 1...Sb4
      • 2.Sg4#
    • 1...Sc5
      • 2.Sg4#
  • Tries
    • 1.Kf1?
      • threat
        • 2.Qe2#
      • 1...Bd2
        • 2.Qc5#
      • 1...Sc1
        • 2.Sg4#
        • 2.Qxc1#
      • 1...f3!
    • 1.Bxf4+?
      • 1...Sxf4
        • 2.Sg4#
      • 1...Kxf4!
    • 1.Bh5?
      • threat
        • 2.Qe2#
      • 1...Bd2
        • 2.Qc5#
      • 1...Sc1
        • 2.Sg4#
        • 2.Qxc1#
      • 1...f3!
    • 1.Re7+?
      • 1...Be4
        • 2.Sg4#
        • 2.Rxe4#
      • 1...Se5
        • 2.Sg4#
      • 1...Be5!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sg4#
      • 1...Sxf2
        • 2.Bc5#
      • 1...Bd2
        • 2.Re7#
      • 1...Se5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • S(a);N_GUARD::QAR1(B),XS(c)
    • S(c);P_SPINB(b)::S(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • B(b);OGATE,P_SPINS(c),SBLOCK::QAB(B)
      • Refutation
        • P(e);
    • Try
      • B(G);CHECK,XP(e)
      • Vars
        • S(c);P_SPINB(b),SBLOCK,XB(G)::S(C)
      • Refutation
        • K(d);S_FLIGHT,XB(G)
    • Try
      • B(I);
      • Threat
        • QAR1(B)
      • Vars
        • B(b);OGATE,P_SPINS(c),SBLOCK::QAB(B)
      • Refutation
        • P(e);
    • Try
      • R(H);CHECK
      • Vars
        • S(c);P_SPINB(b),P_SPINS(c)::S(C)
      • Refutation
        • B(b);P_SPINB(b),P_SPINS(c)
  • Actual
    • B(I);
    • Threat
      • S(C)
    • Vars
      • S(c);N_GUARD,P_SPINB(b),XS(C)::B(G)
      • B(b);N_GUARD,P_SPINS(c)::R(H)
      • S(c);N_GUARD,P_SPINB(b)::B(G)
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