MESON Chess Problem Database

Problem Display
PID: 30460 (2br4/4R1p1/8/2p1N1pN/2P1k1p1/3p2Q1/1K6/8 w - - 0 1)

Shire, David J

The Independent, 1990

2br4/4R1p1/8/2p1N1pN/2P1k1p1/3p2Q1/1K6/8

#2

6 + 8

3256 David Shire Selected Chess Problems 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxd3#
    • 1...Kf5
      • 2.Qxg4#
    • 1...Re8
      • 2.Qxd3#
    • 1...Rf8
      • 2.Qxd3#
    • 1...Rg8
      • 2.Qxd3#
    • 1...Rh8
      • 2.Qxd3#
    • 1...Bd7
      • 2.Qxd3#
  • Tries
    • 1.Sf6+?
      • 1...Kd4
        • 2.Qf2#
        • 2.Qg1#
        • 2.Qxd3#
      • 1...Kf5
        • 2.Qf2#
      • 1...gxf6!
    • 1.Qf2?
      • threat
        • 2.Sd7#
        • 2.Sg3#
      • 1...Rd5
        • 2.Sg3#
      • 1...Rd6
        • 2.Sg3#
      • 1...Rd7
        • 2.Sxd7#
        • 2.Sg3#
      • 1...Re8
        • 2.Sg3#
      • 1...Bf5
        • 2.Sg3#
      • 1...Bd7
        • 2.Sxd7#
        • 2.Sg3#
      • 1...d2
        • 2.Sg3#
      • 1...g3
        • 2.Sd7#
        • 2.Sxg3#
      • 1...Be6!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qxd3#
      • 1...gxf3!
  • Keys
    • 1.Sd7+!
      • 1...Kd4
        • 2.Qxg4#
      • 1...Kf5
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • K(b);P-FLIGHT::QAR1(B),XP(a)
    • K(b);S_FLIGHT::QAB1(B),XP(c)
    • R(h);N_GUARD::QAB1(B),XP(a)
    • B(g);S_CUTR(h)::QAB1(B),XP(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR(B)
      • Refutation
        • P(f);XS(E)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(h);::S(E)
        • B(g);::S(E)
        • P(a);::S(E)
      • Refutation
        • B(g);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B),XP(a)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • S(D);CHECK
    • Vars
      • K(b);P-FLIGHT::QAR(B),XP(c)
      • K(b);S_FLIGHT::QAB(B),XP(a)
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