MESON Chess Problem Database

Problem Display
PID: 109399 (b3B3/B1p1K3/4ppN1/bNnk4/1pn3R1/3r1p2/7Q/8 w - - 0 1)

Skrzek, Janusz

Szachy, 1990

b3B3/B1p1K3/4ppN1/bNnk4/1pn3R1/3r1p2/7Q/8

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Rd4#
    • 1...Rb3
      • 2.Rd4#
    • 1...Rc3
      • 2.Rd4#
    • 1...Re3
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Sb6
      • 2.Sxc7#
  • Tries
    • 1.Qxc7?
      • threat
        • 2.Qxc5#
      • 1...Bxc7
        • 2.Sxc7#
      • 1...Bc6
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sb3
        • 2.Qxc4#
      • 1...Sa4
        • 2.Qxc4#
      • 1...Se4
        • 2.Sf4#
      • 1...Sa6
        • 2.Qxc4#
      • 1...Sb7
        • 2.Bc6#
        • 2.Qxc4#
        • 2.Qc6#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Bb6!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qxc4#
      • 1...Rc3
        • 2.Rd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Sb2
        • 2.Qxc5#
      • 1...Sd2
        • 2.Qxc5#
      • 1...Sa3
        • 2.Qxc5#
      • 1...Se3
        • 2.Qxc5#
      • 1...Se5
        • 2.Qxc5#
      • 1...Sb6
        • 2.Sxc7#
      • 1...Sd6
        • 2.Qxc5#
      • 1...Se4
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD::R1(B)
    • R(a);N_GUARD::R1(B),XR(a)
    • S(d);S_CUTB(e)::S(C),XP(j)
  • Tries
    • Try
      • Q(A);XP(j)
      • Threat
        • QAR1(A),XS(f)
      • Vars
        • B(e);XQ(A)::S(C),XB(e)
        • S(d);N_GUARD::QAR1(A)
        • S(f);OGATE::QAB1(A),XS(d)
        • S(f);SBLOCK::S(D)
      • Refutation
        • B(e);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A),XS(d)
    • Vars
      • R(a);N_GUARD::R1(B)
      • R(a);N_GUARD::R1(B),XR(a)
      • S(d);OGATE::QAR1(A),XS(f)
      • S(d);S_CUTB(e)::S(C),XP(j)
      • S(f);N_GUARD::QAR2(A),XR(a)
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