MESON Chess Problem Database

Problem Display
PID: 24377 (1br3b1/1p6/7Q/R1pk4/1P1B1P2/pP1NP1N1/r1nR1K2/8 w - - 0 1)

Haring, Jacobus

1st Prize, Freie Presse, 1972

1br3b1/1p6/7Q/R1pk4/1P1B1P2/pP1NP1N1/r1nR1K2/8

#2

11 + 9

133 The Problemist Supplement 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Rxc5#
    • 1...Re8
      • 2.Rxc5#
    • 1...Rf8
      • 2.Rxc5#
    • 1...Bxf4
      • 2.Sxf4#
    • 1...Bc7
      • 2.Rxc5#
    • 1...Sxb4
      • 2.Sxb4#
    • 1...Sxd4
      • 2.e4#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.e4#
      • 1...Rxc5
        • 2.Rxc5#
      • 1...Sxe3
        • 2.Sb2#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Be6
        • 2.Qh1#
      • 1...Re8
        • 2.Bb6#
      • 1...Bh7!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.e4#
      • 1...Sxe3
        • 2.Bb2#
      • 1...Bd6
        • 2.Qh1#
      • 1...Be6
        • 2.Qxe6#
      • 1...Re8
        • 2.Sxb7#
      • 1...Bh7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(h);N_GUARD::R1(J),XP(d)
    • R(h);N_GUARD,P_PINP(I)::R1(J),XP(d)
    • B(g);XP(I)::S(D),XB(g)
    • B(g);S_CUTR(h)::R1(J),XP(d)
    • S(b);P_PINR(A),XP(G)::S(D),XS(b)
    • S(b);P_PINR(A),SBLOCK,XB(H)::P(E)
  • Tries
    • Try
      • B(H);XP(d)
      • Threat
        • P(E)
      • Vars
        • R(h);OGATE,P_SPINR(h),XB(H)::R1(J),XR(h)
        • S(b);N_GUARD,P_PINR(A),XP(E)::R(A)+S(D)
        • B(g);N_GUARD::QAR1(K),XB(g)
        • B(i);SBLOCK::QAB(K)
        • R(h);N_GUARD::R(J)+B(H)
      • Refutation
        • B(i);
  • Actual
    • S(D);XP(d)
    • Threat
      • P(E)
    • Vars
      • S(b);N_GUARD,P_PINR(A),XP(E)::R(A)+B(H)
      • B(g);SBLOCK::QAB(K)
      • B(i);N_GUARD::QAB1(K),XB(i)
      • R(h);N_GUARD::R(J)+S(D),XP(f)
      • B(i);N_GUARD::QAB1(K)
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