MESON Chess Problem Database

Problem Display
PID: 116201 (1rb5/bpp5/4pp2/R7/P1Pkp1n1/r1N3QK/1npB1pN1/1q1R1B2 w - - 0 1)

Groeneveld, Cornelis

van Gool, Johann Christoffel

Thema Danicum, 1991

1rb5/bpp5/4pp2/R7/P1Pkp1n1/r1N3QK/1npB1pN1/1q1R1B2

#2

10 + 15

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Bxc3#
      • 2.Be3#
      • 2.Qxc3#
    • 1...Bc5
      • 2.Sb5#
    • 1...Sxc4
      • 2.Se2#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Se5
      • 2.Qe3#
    • 1...Sh6
      • 2.Qe3#
    • 1...e3
      • 2.Qf4#
      • 2.Qxg4#
    • 1...e5
      • 2.Rd5#
    • 1...c5
      • 2.Sb5#
      • 2.Qd6#
    • 1...c6
      • 2.Qd6#
  • Tries
    • 1.Qxf2+?
      • 1...Se3
        • 2.Qxe3#
      • 1...e3
        • 2.Qf4#
      • 1...Sxf2+!
  • Keys
    • 1.Qxc7!
      • threat
        • 2.Qd6#
      • 1...Rxc3+
        • 2.Be3#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sd3
        • 2.Se2#
      • 1...Se3
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(k);SBLOCK::S(E)
    • S(b);SBLOCK,XP(I)::S(E)
    • S(h);N_GUARD::QAB1(F)
    • S(h);N_GUARD::QAB1(F),XS(h)
    • P(i);N_GUARD::R1(J)
    • P(m);N_GUARD::QAR2(F)
  • Tries
    • Try
      • Q(F);CHECK,P_SPINS(E),XP(d)
      • Vars
        • S(h);N_GUARD,N_PINS(E),P_SPINS(h)::QAB1(F),XS(h)
        • P(g);N_PINS(E),OGATEB,P_SPINP(g)::QAR2(F)
      • Refutation
        • S(h);CHECK,XQ(F)
  • Actual
    • Q(F);P_SPINS(E),XP(m)
    • Threat
      • QAR2(F)
    • Vars
      • R(e);CHECK,SBLOCK,XS(E)::R(A)+B(C),DCHECK
      • S(b);OGATE,XP(I)::QAR1(F),XS(b)
      • B(k);N_GUARD::QAB1(F),XB(k)
      • S(b);N_PINS(E),SBLOCK::S(E)
      • S(h);N_PINS(E)::S(E)
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