MESON Chess Problem Database

Problem Display
PID: 148441 (3n4/3QP2q/b2P1pr1/8/2k1N1R1/1N3Rr1/1P1BP3/1K2b3 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1955

3n4/3QP2q/b2P1pr1/8/2k1N1R1/1N3Rr1/1P1BP3/1K2b3

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qc6#
  • Tries
    • 1.Sc3+?
      • 1...Kxb3
        • 2.Qa4#
      • 1...R3xg4
        • 2.Qa4#
      • 1...R6xg4+!
    • 1.Sxg3+?
      • 1...Kd5
        • 2.Rf5#
      • 1...Rxg4+!
    • 1.Sg5+?
      • 1...Kd5
        • 2.Rf5#
      • 1...Rxg4!
    • 1.Sxf6+?
      • 1...R3xg4
        • 2.Qa4#
      • 1...R6xg4+!
    • 1.Rd3?
      • threat
        • 2.Sa5#
        • 2.Qa4#
      • 1...Bxd2
        • 2.Sexd2#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Qh5
        • 2.Qa4#
      • 1...Rg5
        • 2.Qa4#
      • 1...Bb5
        • 2.Sa5#
      • 1...Sb7
        • 2.Qa4#
      • 1...Rxd3!
    • 1.Qc7+?
      • 1...Kb5
        • 2.Sc3#
      • 1...Sc6
        • 2.Qxc6#
      • 1...Kd5!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qa4#
      • 1...Kxb3
        • 2.Sc5#
      • 1...Rxb3
        • 2.Sg5#
      • 1...Bxd2
        • 2.Sexd2#
      • 1...Bb5
        • 2.Qxb5#
      • 1...Sc6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(h);N_GUARD::QAR2(J),XS(h)
    • S(h);N_GUARD::QAR2(J)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(E)::QAB1(J)
        • R(b);XR(H)::QAR2(J)
      • Refutation
        • R(f);CHECK,XR(H)
    • Try
      • S(G);CHECK,XR(b)
      • Vars
        • K(c);S_FLIGHT::R(F)
      • Refutation
        • R(f);CHECK,XR(H)
    • Try
      • S(G);CHECK
      • Vars
        • K(c);S_FLIGHT::R(F)
      • Refutation
        • R(b);XR(H)
    • Try
      • S(G);CHECK,XP(e)
      • Vars
        • R(b);XR(H)::QAR2(J)
      • Refutation
        • R(f);CHECK,XR(H)
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XB(C)::R(H)+S(G),DCHECK,XB(a)
        • S(h);N_GUARD::QAR2(J),XS(h)
        • Q(g);::QAR2(J)
        • R(f);::QAR2(J)
        • B(d);::S(E)
        • S(h);::QAR2(J)
      • Refutation
        • R(b);XR(F)
    • Try
      • Q(J);CHECK
      • Vars
        • K(c);S_FLIGHT::S(G)
        • S(h);N_GUARD,P_SPINS(h)::QAR2(J),XS(h)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • QAR2(J)
    • Vars
      • K(c);S_FLIGHT,XS(E)::S(G)
      • R(b);N_GUARD,P_PINP(B),SBLOCK,XS(E)::R(H)+S(G)
      • B(a);XB(C)::R(H)+S(G),DCHECK,XB(a)
      • B(d);N_GUARD::QAB1(J),XB(d)
      • S(h);N_GUARD::QAB(J)
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