MESON Chess Problem Database

Problem Display
PID: 146606 (8/1N3R2/1Kn1p3/2p1k2p/b1Q1Np2/3pbP2/1pn5/1qr5 w - - 0 1)

Vaughan, Colin V

British Chess Magazine, 1945

8/1N3R2/1Kn1p3/2p1k2p/b1Q1Np2/3pbP2/1pn5/1qr5

#2

6 + 13

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bd2
      • 2.Qxc5#
    • 1...Sd4
      • 2.Qxc5#
  • Tries
    • 1.Sf2?
      • threat
        • 2.Sxd3#
        • 2.Qe4#
      • 1...Bxf2
        • 2.Qe4#
      • 1...Rd1
        • 2.Qe4#
      • 1...Bd4
        • 2.Sxd3#
      • 1...Sa1
        • 2.Qe4#
      • 1...Se1
        • 2.Qe4#
      • 1...Sa3
        • 2.Qe4#
      • 1...S2b4
        • 2.Qe4#
      • 1...S6b4
        • 2.Qe4#
      • 1...S6d4
        • 2.Sxd3#
        • 2.Qxc5#
      • 1...d2
        • 2.Sd3#
        • 2.Qe4#
      • 1...S2d4!
    • 1.Sc3?
      • threat
        • 2.Qe4#
      • 1...S2d4
        • 2.Qxc5#
      • 1...S6d4
        • 2.Qxc5#
      • 1...Bd4!
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Bd4
        • 2.Qxe6#
      • 1...S6d4
        • 2.Qxc5#
      • 1...S2d4!
    • 1.Sf6?
      • threat
        • 2.Sd7#
        • 2.Qe4#
      • 1...S2d4
        • 2.Sd7#
      • 1...Bd4
        • 2.Sd7#
      • 1...S6b4
        • 2.Qe4#
      • 1...S6d4
        • 2.Qxc5#
      • 1...Sa5
        • 2.Qe4#
      • 1...Sa7
        • 2.Qe4#
      • 1...Se7
        • 2.Qe4#
      • 1...Sb8
        • 2.Qe4#
      • 1...Sd8
        • 2.Qe4#
      • 1...Kf5!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Rd7#
      • 1...Kxe6!
  • Keys
    • 1.Sexc5!
      • threat
        • 2.Qe4#
      • 1...Bxc5+
        • 2.Qxc5#
      • 1...Bd4
        • 2.Qxe6#
      • 1...S2d4
        • 2.Sd7#
      • 1...S6d4
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(f);N_GUARD::QAR2(B),XP(i)
    • S(l);S_CUTB(f)::QAR2(B),XP(i)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XS(C)::QAR1(B)
        • R(b);::QAR1(B)
        • B(f);::S(C),XP(e)
        • S(d);::QAR1(B)
        • S(l);::QAR1(B)
      • Refutation
        • S(d);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • S(d);S_CUTB(f)::QAR2(B),XP(i)
        • S(l);S_CUTB(f)::QAR2(B),XP(i)
      • Refutation
        • B(f);
    • Try
      • S(C);
      • Threat
        • QAR1(B)
      • Vars
        • B(f);SBLOCK::QAR1(B),XP(m)
        • S(l);S_CUTB(f)::QAR2(B),XP(i)
      • Refutation
        • S(d);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::S(C)
        • B(f);::S(C)
        • S(l);::QAR1(B)
        • S(l);S_CUTB(f)::QAR2(B),XP(i)
      • Refutation
        • K(j);P-FLIGHT
    • Try
      • Q(B);CHECK,XP(m)
      • Vars
        • K(j);S_FLIGHT::R(F)
      • Refutation
        • K(j);P-FLIGHT,XQ(B)
  • Actual
    • S(C);P_SPINS(C),XP(i)
    • Threat
      • QAR1(B)
    • Vars
      • B(f);CHECK,OGATE,XS(C)::QAR2(B),XB(f)
      • B(f);SBLOCK::QAR1(B),XP(m)
      • S(d);N_PINS(C)::S(C)
      • S(l);N_PINS(C)::S(C),XP(e)
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