MESON Chess Problem Database

Problem Display
PID: 272657 (6Q1/3p1N2/2p1pp2/2Pk4/3p4/BK1N1r1r/4Rp2/2Rn3B w - - 0 1)

Montgomerie, John

The Problemist, 1957

6Q1/3p1N2/2p1pp2/2Pk4/3p4/BK1N1r1r/4Rp2/2Rn3B

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rh2
      • 2.Bxf3#
    • 1...Rh5
      • 2.Bxf3#
    • 1...Rh6
      • 2.Bxf3#
    • 1...Rh7
      • 2.Bxf3#
    • 1...Rh8
      • 2.Bxf3#
    • 1...Sc3
      • 2.Sf4#
    • 1...e5
      • 2.Sxe5#
      • 2.Sg5#
      • 2.Sd6#
      • 2.Sh6#
      • 2.Sd8#
      • 2.Sh8#
    • 1...f5
      • 2.Re5#
  • Tries
    • 1.Qg5+?
      • 1...fxg5
        • 2.Re5#
      • 1...f5
        • 2.Re5#
      • 1...e5!
    • 1.Qb8?
      • threat
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Se3!
    • 1.Qc8?
      • threat
        • 2.Qxd7#
      • 1...d6
        • 2.Qxe6#
      • 1...Se3!
    • 1.Qd8?
      • threat
        • 2.Qxd7#
      • 1...d6
        • 2.Qxd6#
      • 1...Se3!
    • 1.Qe8?
      • threat
        • 2.Qxd7#
      • 1...d6
        • 2.Qxe6#
      • 1...Se3!
    • 1.Qf8?
      • threat
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Se3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qe4#
      • 1...Rh4
        • 2.Bxf3#
      • 1...Sc3
        • 2.Sf4#
      • 1...Se3
        • 2.Sb4#
      • 1...e5
        • 2.Qxd7#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(d);N_GUARD::B(B),XR(c)
    • S(a);N_PINS(F)::S(F)
    • P(i);N_GUARD::R1(C)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • P(i);N_GUARD,XQ(I)::R1(C)
        • P(i);N_GUARD,P_SPINP(i)::R1(C)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • P(j);::QAR1(I),XP(j)
      • Refutation
        • S(a);N_PINS(F)
    • Try
      • Q(I);
      • Threat
        • QAR2(I),XP(j)
      • Vars
        • P(j);OGATE::QAB1(I),XP(h)
      • Refutation
        • S(a);N_PINS(F)
    • Try
      • Q(I);P_PINP(j)
      • Threat
        • QAR2(I),XP(j)
      • Vars
        • P(j);OGATE::QAR1(I),XP(j)
      • Refutation
        • S(a);N_PINS(F)
    • Try
      • Q(I);
      • Threat
        • QAR2(I),XP(j)
      • Vars
        • P(j);N_GUARD::QAB1(I),XP(h)
      • Refutation
        • S(a);N_PINS(F)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • P(j);::QAR1(I),XP(j)
      • Refutation
        • S(a);N_PINS(F)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • R(d);N_GUARD::B(B),XR(c)
      • S(a);N_PINS(F)::S(F)
      • P(h);OGATE::QAR2(I),XP(j)
      • P(i);N_GUARD::R1(C)
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