MESON Chess Problem Database

Problem Display
PID: 235183 (3R4/8/1nnN4/B1pP2R1/b2k3P/1Pp1p1N1/4K1PQ/8 w - - 0 1)

Groeneveld, Cornelis

Schach, 1986

3R4/8/1nnN4/B1pP2R1/b2k3P/1Pp1p1N1/4K1PQ/8

#2

11 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5+
      • 2.Sxb5#
    • 1...Sxd5
      • 2.Sgf5#
    • 1...Se5
      • 2.Sdf5#
    • 1...c4
      • 2.Bxb6#
  • Tries
    • 1.Rf8?
      • threat
        • 2.Rf4#
      • 1...Bb5+
        • 2.Sxb5#
      • 1...Sxd5
        • 2.Sgf5#
      • 1...c4
        • 2.Bxb6#
      • 1...Se5!
    • 1.Qg1?
      • threat
        • 2.Qxe3#
        • 2.Qd1#
      • 1...Bb5+
        • 2.Sxb5#
      • 1...Bxb3
        • 2.Qxe3#
      • 1...Sxd5
        • 2.Qd1#
      • 1...Se5
        • 2.Sdf5#
      • 1...c4
        • 2.Bxb6#
        • 2.Qxe3#
      • 1...Sb4
        • 2.Qxe3#
      • 1...c2
        • 2.Qxe3#
        • 2.Qa1#
      • 1...Sc4!
    • 1.Qh3?
      • threat
        • 2.Qg4#
      • 1...Bb5+
        • 2.Sxb5#
      • 1...Se5
        • 2.Sdf5#
      • 1...c4
        • 2.Bxb6#
      • 1...Sxd5!
  • Keys
    • 1.h5!
      • threat
        • 2.Qh4#
      • 1...Bb5+
        • 2.Sxb5#
      • 1...Sxd5
        • 2.Sgf5#
      • 1...Se5
        • 2.Sdf5#
      • 1...c4
        • 2.Bxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(c);CHECK,N_GUARD::S(J),XB(c)
    • S(f);SBLOCK,XP(H)::S(E)
    • S(g);SBLOCK::S(J)
    • P(e);OGATEB::B(G),XS(f)
  • Tries
    • Try
      • R(K);
      • Threat
        • R(K)
      • Vars
        • B(c);CHECK,N_GUARD::S(J),XB(c)
        • S(f);SBLOCK,XP(H)::S(E)
        • P(e);OGATEB::B(G),XS(f)
      • Refutation
        • S(g);
    • Try
      • Q(C);P_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • B(c);CHECK,N_GUARD::S(J),XB(c)
        • B(c);XP(D)::QAB1(C),XP(b)
        • S(f);XP(H)::QAR(C)
        • S(g);SBLOCK::S(J)
        • S(g);::QAB1(C),XP(b)
      • Refutation
        • S(f);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • B(c);CHECK,N_GUARD::S(J),XB(c)
        • S(g);SBLOCK::S(J)
        • P(e);OGATEB::B(G),XS(f)
      • Refutation
        • S(f);XP(H)
  • Actual
    • P(F);
    • Threat
      • QAR(C)
    • Vars
      • B(c);CHECK,N_GUARD::S(J),XB(c)
      • S(f);SBLOCK,XP(H)::S(E)
      • S(g);SBLOCK::S(J)
      • P(e);OGATEB::B(G),XS(f)
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