MESON Chess Problem Database

Problem Display
PID: 265671 (6r1/p3Nn2/K3pn2/2B1k3/p2p4/8/2PNpR2/bQ6 w - - 0 1)

Laue, Hartmut

Variantim, 2022

6r1/p3Nn2/K3pn2/2B1k3/p2p4/8/2PNpR2/bQ6

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Sc4#
    • 1...Sd5
      • 2.Sc6#
    • 1...Sd8
      • 2.Qb8#
    • 1...d3
      • 2.Qxa1#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Sc6#
      • 1...Rc8
        • 2.Sg6#
      • 1...Sd8!
    • 1.Qh1?
      • threat
        • 2.Sc4#
        • 2.Sc6#
      • 1...Rc8
        • 2.Sc4#
        • 2.Sg6#
        • 2.Qh2#
      • 1...Se4
        • 2.Sc4#
        • 2.Qxe4#
      • 1...Sd6
        • 2.Sc6#
      • 1...Sd8
        • 2.Sc4#
      • 1...Rg2!
    • 1.Qb3?
      • threat
        • 2.Sc6#
      • 1...Rc8
        • 2.Sg6#
        • 2.Qg3#
      • 1...Sd8
        • 2.Qb8#
      • 1...axb3!
    • 1.Qb7?
      • threat
        • 2.Sc4#
      • 1...Sd5
        • 2.Sc6#
      • 1...Sd6!
    • 1.Qb8+?
      • 1...Sd6
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...Rxb8!
    • 1.c3?
      • threat
        • 2.Sc4#
      • 1...Sd6
        • 2.Bxd4#
      • 1...d3!
  • Keys
    • 1.c4!
      • threat
        • 2.Sc6#
      • 1...dxc4 ep
        • 2.Sc4#
      • 1...Rc8
        • 2.Sg6#
      • 1...Sd8
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • S(g);SBLOCK::S(C)
    • S(g);SBLOCK::S(G)
    • S(i);N_GUARD,S_CUTR(j)::QAB(A)
    • P(d);OGATEB::QAB(A),XB(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • R(j);N_GUARD::S(G)
      • Refutation
        • S(i);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::S(G)
        • S(i);::S(C)
      • Refutation
        • R(j);
    • Try
      • Q(A);
      • Threat
        • S(G)
      • Vars
        • S(i);N_GUARD,S_CUTR(j)::QAB(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • S(C)
      • Vars
        • S(g);SBLOCK::S(G)
      • Refutation
        • S(i);
    • Try
      • Q(A);CHECK
      • Refutation
        • R(j);XQ(A)
    • Try
      • P(B);
      • Threat
        • S(C)
      • Vars
        • S(i);SBLOCK::B(E),XP(d)
      • Refutation
        • P(d);
  • Actual
    • P(B);
    • Threat
      • S(G)
    • Vars
      • P(d);EP,XP(B)::S(C)
      • R(j);N_GUARD::S(G)
      • S(i);N_GUARD,S_CUTR(j)::QAB(A)
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