MESON Chess Problem Database

Problem Display
PID: 40344 (B4R2/R1pnN1K1/1b2k3/1Q1N4/2rpn3/7b/7B/8 w - - 0 1)

Drese, Gerardus Hendrikus

Tijdschrift vd NSB, 1931

B4R2/R1pnN1K1/1b2k3/1Q1N4/2rpn3/7b/7B/8

#2

8 + 8

3979 Systematic Terminology 1984
136 Problem Observer 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sec5
      • 2.Qc6#
    • 1...c5
      • 2.Qxd7#
  • Tries
    • 1.Sf4+?
      • 1...Kd6
        • 2.Sc8#
      • 1...Kxe7!
    • 1.Sc8?
      • threat
        • 2.Sf4#
      • 1...Bc5
        • 2.Sxc7#
      • 1...Sec5
        • 2.Qc6#
      • 1...Sdc5
        • 2.Qe8#
      • 1...c5
        • 2.Qxd7#
      • 1...Rc5!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sf4#
      • 1...Bxf5
        • 2.Re8#
      • 1...Rc5
        • 2.Sxd4#
      • 1...Bc5
        • 2.Sxc7#
      • 1...Sec5
        • 2.Qc6#
      • 1...Sdc5
        • 2.Qe8#
      • 1...c5
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,S_CUTR(b)::QAR2(B)
    • P(g);::QAB1(B),XS(h)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(f);P-FLIGHT::S(E)
      • Refutation
        • K(f);P-FLIGHT,XS(E)
    • Try
      • S(E);
      • Threat
        • S(C)
      • Vars
        • B(e);N_GUARD,S_CUTR(b)::S(C),XP(g)
        • S(d);N_GUARD,S_CUTR(b)::QAR2(B)
        • S(h);OGATE::QAR2(B)
        • P(g);::QAB1(B),XS(h)
      • Refutation
        • R(b);
  • Actual
    • S(E);
    • Threat
      • S(C)
    • Vars
      • B(a);SBLOCK,XS(E)::R(H)
      • R(b);N_GUARD,S_CUTB(e)::S(E),XP(c)
      • B(e);N_GUARD,S_CUTR(b)::S(C),XP(g)
      • S(d);N_GUARD,S_CUTR(b)::QAR2(B)
      • S(h);OGATE::QAR2(B)
      • P(g);::QAB1(B),XS(h)
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