MESON Chess Problem Database

Problem Display
PID: 135522 (8/1B2KNp1/7p/r1Q1pk1P/6p1/n2p2P1/1Br2n2/8 w - - 0 1)

Groeneveld, Cornelis

Rhein-Main Presse, 1999

8/1B2KNp1/7p/r1Q1pk1P/6p1/n2p2P1/1Br2n2/8

#2

7 + 10

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qxf2#
    • 1...Rxb2
      • 2.Qc8#
    • 1...Rd2
      • 2.Qc8#
    • 1...Re2
      • 2.Qc8#
    • 1...Rc3
      • 2.Qxf2#
    • 1...Ra4
      • 2.Qxe5#
    • 1...Ra6
      • 2.Qxe5#
    • 1...Ra7
      • 2.Qxe5#
    • 1...Ra8
      • 2.Qxe5#
    • 1...Se4
      • 2.Bc8#
    • 1...Sc4
      • 2.Qc8#
    • 1...Sb5
      • 2.Qxe5#
    • 1...d2
      • 2.Qxf2#
    • 1...g5
      • 2.Sd6#
      • 2.Sxh6#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qc8#
      • 1...Rxc3
        • 2.Qxf2#
      • 1...Ra6
        • 2.Qxe5#
      • 1...Ra8
        • 2.Qxe5#
      • 1...Rxc5!
    • 1.Qc6?
      • threat
        • 2.Bc8#
        • 2.Qd7#
        • 2.Qe6#
        • 2.Qg6#
      • 1...Rd5
        • 2.Qg6#
      • 1...Ra6
        • 2.Bc8#
      • 1...Ra7
        • 2.Qd7#
        • 2.Qe6#
        • 2.Qg6#
      • 1...Ra8
        • 2.Qd7#
        • 2.Qe6#
        • 2.Qg6#
      • 1...g6
        • 2.Bc8#
        • 2.Qd7#
        • 2.Qe6#
        • 2.Qf6#
        • 2.Qxg6#
      • 1...Rxc6!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Sd6#
      • 1...Rxc1
        • 2.Qxf2#
      • 1...Rd2
        • 2.Qc8#
      • 1...Ra6
        • 2.Qxe5#
      • 1...Se4
        • 2.Bc8#
      • 1...Sc4
        • 2.Qc8#
      • 1...Sb5
        • 2.Qxe5#
      • 1...d2
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::QAR(C),XS(b)
    • R(a);N_GUARD,XB(A)::QAB(C)
    • R(a);N_GUARD::QAB(C)
    • R(f);N_GUARD::QAR1(C),XP(g)
    • R(f);N_GUARD,P_PINB(E)::QAR1(C),XP(g)
    • S(b);SBLOCK::B(E)
    • S(c);S_CUTR(a)::QAB(C)
    • S(c);S_CUTR(f)::QAR1(C),XP(g)
    • P(d);S_CUTR(a)::QAR(C),XS(b)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB(C)
      • Vars
        • R(a);N_GUARD,XB(A)::QAR(C),XS(b)
        • R(f);N_GUARD::QAR1(C),XP(g)
      • Refutation
        • R(f);N_SPINP(g),XQ(C)
    • Try
      • Q(C);N_PINP(g)
      • Threat
        • DUALS(4)
      • Vars
        • R(f);::QAB1(C)
        • R(f);::B(E)
      • Refutation
        • R(a);XQ(C)
  • Actual
    • B(A);
    • Threat
      • S(G)
    • Vars
      • R(a);N_GUARD,XB(A)::QAR(C),XS(b)
      • R(a);N_GUARD::QAB(C)
      • R(f);N_GUARD::QAR1(C),XP(g)
      • S(b);SBLOCK::B(E)
      • S(c);S_CUTR(a)::QAB(C)
      • S(c);S_CUTR(f)::QAR1(C),XP(g)
      • P(d);S_CUTR(a)::QAR(C),XS(b)
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