MESON Chess Problem Database

Problem Display
PID: 186197 (8/3p4/3p4/6NK/Rnn2kP1/R2r2rp/4QP2/4N2b w - - 0 1)

Kipping, Cyril Stanley

Chess, 1959

8/3p4/3p4/6NK/Rnn2kP1/R2r2rp/4QP2/4N2b

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.fxg3#
    • 1...Rd2
      • 2.fxg3#
    • 1...Rdf3
      • 2.Qe4#
    • 1...Rd4
      • 2.fxg3#
    • 1...Rd5
      • 2.fxg3#
    • 1...Rg2
      • 2.Qe4#
    • 1...Rgf3
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Se3
      • 2.Sxd3#
  • Tries
    • 1.Sg2+?
      • 1...Rxg2
        • 2.Qe4#
      • 1...hxg2
        • 2.Qe4#
      • 1...Bxg2!
    • 1.Qe6?
      • threat
        • 2.Qf5#
        • 2.Qf6#
      • 1...Rxg4
        • 2.Qf6#
      • 1...Rd5
        • 2.fxg3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qf5#
        • 2.Qxd6#
      • 1...Se3
        • 2.Sxd3#
      • 1...dxe6!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qf6#
      • 1...Rd5
        • 2.fxg3#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sd5
        • 2.Qxd6#
      • 1...Se3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::P(C),XR(c)
    • R(b);S_CUTB(a)::QAR1(B)
    • R(b);N_GUARD,P_PINS(G)::P(C),XR(c)
    • R(c);S_CUTB(a)::QAR1(B)
    • B(a);N_GUARD::QAR1(B),XB(a)
    • S(f);P_SPINS(e),S_CUTR(c)::S(A),XR(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(c);XS(A)::QAR1(B)
        • P(d);XS(A)::QAR1(B)
      • Refutation
        • B(a);XS(A)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XP(F)::QAR2(B)
        • R(b);N_GUARD,P_PINS(G)::P(C),XR(c)
        • B(a);N_GUARD::QAR1(B),XB(a)
        • S(f);P_SPINS(e),S_CUTR(c)::S(A),XR(b)
      • Refutation
        • P(i);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • R(b);N_GUARD,P_PINS(G)::P(C),XR(c)
      • B(a);N_GUARD::QAR1(B),XB(a)
      • S(e);P_SPINS(f),S_CUTR(b)::QAB(B),XP(h)
      • S(f);P_SPINS(e),S_CUTR(c)::S(A),XR(b)
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