MESON Chess Problem Database

Problem Display
PID: 230943 (3nN1B1/1p3rN1/1p2rp2/1QpkpK2/3p4/3P4/8/8 w - - 0 1)

Fox, Charles Masson

British Chess Magazine, 1931

3nN1B1/1p3rN1/1p2rp2/1QpkpK2/3p4/3P4/8/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qc4#
    • 1...Rd6
      • 2.Sc7#
    • 1...Rxe8
      • 2.Qd7#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Rf8
      • 2.Qd7#
    • 1...Sc6
      • 2.Qc4#
  • Tries
    • 1.Sxe6?
      • threat
        • 2.S6c7#
      • 1...Rc7
        • 2.Sf4#
        • 2.S6xc7#
      • 1...Sxe6!
    • 1.Bxf7?
      • threat
        • 2.Qd7#
      • 1...Sc6
        • 2.Bxe6#
        • 2.Qc4#
      • 1...Sxf7!
    • 1.Qd7+?
      • 1...Rd6
        • 2.Sxf6#
        • 2.Sc7#
        • 2.Qxd6#
      • 1...Rxd7!
    • 1.Qb3+?
      • 1...c4
        • 2.Qxc4#
        • 2.Qb5#
      • 1...Kc6!
  • Keys
    • 1.Sh5!
      • 1...Rxe8
        • 2.Qd7#
      • 1...Rc6
        • 2.Qc4#
      • 1...Rd6
        • 2.Sc7#
      • 1...Ree7
        • 2.Shxf6#
      • 1...Rc7
        • 2.Shxf6#
      • 1...Rd7
        • 2.Shxf6#
        • 2.Qxd7#
      • 1...Rfe7
        • 2.Shxf6#
      • 1...Rg7
        • 2.Shxf6#
      • 1...Rh7
        • 2.Shxf6#
      • 1...Rf8
        • 2.Qd7#
      • 1...Sc6
        • 2.Qc4#
      • 1...e4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(f);P_SPINR(i),SBLOCK::QAB1(B)
    • R(f);P_SPINR(i),SBLOCK::S(E)
    • R(f);N_GUARD,P_SPINR(i),XS(E)::QAR2(B)
    • R(i);N_GUARD,P_SPINR(f)::QAR2(B),XR(i)
    • R(i);N_GUARD,P_SPINR(f)::QAR2(B)
    • S(j);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(D);XR(f)
      • Threat
        • S(D)
      • Refutation
        • S(j);XS(D)
    • Try
      • B(F);P_PINR(f),XR(i)
      • Threat
        • QAR2(B)
      • Refutation
        • S(j);N_SPINR(f),XB(F)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • R(i);P_SPINR(f),XQ(B)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • R(f);N_GUARD,P_SPINR(i),XS(E)::QAR2(B)
      • R(f);P_SPINR(i),SBLOCK::QAB1(B)
      • R(f);P_SPINR(i),SBLOCK::S(E)
      • R(f);N_GUARD,P_SPINR(i)::S(D),XP(g)
      • R(i);N_GUARD,P_SPINR(f)::S(D),XP(g)
      • R(i);N_GUARD,P_SPINR(f)::QAR2(B)
      • S(j);SBLOCK::QAB1(B)
      • P(d);N_GUARD::S(D)
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