MESON Chess Problem Database

Problem Display
PID: 241464 (8/B3N3/2pr2N1/1pPr4/1pk1P3/1nb3R1/b1BP1Q2/6K1 w - - 0 1)

Hjelle, David

Norsk Sjakkblad, 1958

8/B3N3/2pr2N1/1pPr4/1pk1P3/1nb3R1/b1BP1Q2/6K1

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Se5#
    • 1...Bd4
      • 2.Bd3#
    • 1...Sd4
      • 2.d3#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Sb6#
        • 2.Bd3#
        • 2.d3#
      • 1...Bxd2
        • 2.Sb6#
        • 2.Se5#
        • 2.Bd3#
      • 1...Sxd2
        • 2.Sb6#
      • 1...Sxc5
        • 2.Sb6#
        • 2.Qxc5#
      • 1...cxd5
        • 2.Bd3#
        • 2.d3#
      • 1...Bb1
        • 2.Sb6#
        • 2.d3#
      • 1...Bd4
        • 2.Bd3#
        • 2.d3#
      • 1...Sa1
        • 2.Sb6#
        • 2.d3#
      • 1...Sc1
        • 2.Sb6#
      • 1...Sd4
        • 2.Se3#
        • 2.Se5#
        • 2.d3#
      • 1...Sa5
        • 2.Sb6#
        • 2.d3#
      • 1...Rxd5!
    • 1.Qf1+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Rd3!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Rd3!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Sb6#
      • 1...Rd4
        • 2.Se5#
      • 1...Bd4
        • 2.Bd3#
      • 1...Sd4
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(g);N_GUARD,S_CUTB(c)::S(H)
    • B(c);P_PINQ(D),S_CUTR(g)::B(B)
    • S(b);S_CUTR(g)::P(C)
  • Tries
    • Try
      • S(J);XR(g)
      • Threat
        • DUALS(3)
      • Vars
        • S(b);XP(C)::S(J)
        • S(b);::S(J)
      • Refutation
        • R(i);XS(J)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(D)
      • Refutation
        • R(g);P_SPINR(g)
    • Try
      • Q(D);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(D)
      • Refutation
        • R(g);P_SPINR(g)
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • R(g);N_GUARD,S_CUTB(c)::S(H)
      • B(c);P_PINQ(D),S_CUTR(g)::B(B)
      • S(b);S_CUTR(g)::P(C)
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