MESON Chess Problem Database

Problem Display
PID: 223455 (8/7n/5p1K/2pB3P/5kPR/1r1p4/3P1N1P/Q5n1 w - - 0 1)

Steinmann, Wilhelm Friedrich Martin

Bruderschaft, 1886

8/7n/5p1K/2pB3P/5kPR/1r1p4/3P1N1P/Q5n1

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sxd3#
    • 1...Rb2
      • 2.Sxd3#
    • 1...Rb4
      • 2.Sxd3#
    • 1...Rb5
      • 2.Sxd3#
    • 1...Rb6
      • 2.Sxd3#
    • 1...Rb7
      • 2.Sxd3#
    • 1...Rb8
      • 2.Sxd3#
    • 1...Se2
      • 2.Sh3#
    • 1...Sf3
      • 2.Sh3#
    • 1...Sh3
      • 2.Sxh3#
    • 1...Sg5
      • 2.Qxf6#
    • 1...Sf8
      • 2.Qxf6#
    • 1...c4
      • 2.Qd4#
    • 1...f5
      • 2.g5#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Sxd3#
      • 1...c4
        • 2.Qd4#
      • 1...Rxc3!
    • 1.Qe1?
      • threat
        • 2.Qe3#
        • 2.Qe4#
      • 1...Rb4
        • 2.Sxd3#
        • 2.Qe3#
      • 1...Sg5
        • 2.Qe3#
      • 1...f5
        • 2.Qe3#
        • 2.g5#
      • 1...Se2!
  • Keys
    • 1.Qb2!
      • 1...Rxb2
        • 2.Sxd3#
      • 1...Rc3
        • 2.Qb8#
      • 1...Ra3
        • 2.Qb8#
      • 1...Rb4
        • 2.Sxd3#
      • 1...Rb5
        • 2.Sxd3#
      • 1...Rb6
        • 2.Sxd3#
      • 1...Rb7
        • 2.Sxd3#
      • 1...Rb8
        • 2.Sxd3#
        • 2.Qxb8#
      • 1...Se2
        • 2.Sh3#
      • 1...Sf3
        • 2.Sh3#
      • 1...Sh3
        • 2.Sxh3#
      • 1...Sg5
        • 2.Qxf6#
      • 1...Sf8
        • 2.Qxf6#
      • 1...c4
        • 2.Qd4#
      • 1...f5
        • 2.g5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::S(C),XP(c)
    • S(a);N_GUARD::S(C)
    • S(a);N_GUARD::S(C),XS(a)
    • S(g);N_GUARD::QAR2(A),XP(f)
    • P(e);N_GUARD::QAR2(A)
    • P(f);SBLOCK::R(F)+P(E)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(C),XP(c)
      • Vars
        • P(e);N_GUARD::QAR2(A)
      • Refutation
        • R(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(g);::QAB1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Vars
      • R(b);N_GUARD,XQ(A)::S(C),XP(c)
      • R(b);OGATE::QAB(A)
      • R(b);N_GUARD::S(C),XP(c)
      • S(a);N_GUARD::S(C)
      • S(a);N_GUARD::S(C),XS(a)
      • S(g);N_GUARD::QAR2(A),XP(f)
      • P(e);N_GUARD::QAR2(A)
      • P(f);SBLOCK::R(F)+P(E)
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