MESON Chess Problem Database

Problem Display
PID: 76496 (4n1r1/1Np3pB/K5Rr/p2Pk3/1p1pPN2/q2p4/8/4QR2 w - - 0 1)

Gamage, Frederick

Frederick Gamage (Prcic), 2004

4n1r1/1Np3pB/K5Rr/p2Pk3/1p1pPN2/q2p4/8/4QR2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxd3#
    • 1...Qb2
      • 2.Sxd3#
    • 1...Qa1
      • 2.Sxd3#
    • 1...Qa2
      • 2.Sxd3#
    • 1...Qa4
      • 2.Sxd3#
    • 1...Rh1
      • 2.Re6#
    • 1...Rh2
      • 2.Re6#
    • 1...Rh3
      • 2.Re6#
    • 1...Rh4
      • 2.Re6#
    • 1...Rh5
      • 2.Re6#
    • 1...Rxg6+
      • 2.Sxg6#
    • 1...Rxh7
      • 2.Re6#
    • 1...Sf6
      • 2.Rg5#
    • 1...b3
      • 2.Sxd3#
  • Tries
    • 1.Sd8?
      • threat
        • 2.Sc6#
        • 2.Sf7#
      • 1...Sf6
        • 2.Sf7#
      • 1...Rf8
        • 2.Sc6#
      • 1...Qc1
        • 2.Sxd3#
        • 2.Sf7#
      • 1...Qc3
        • 2.Sf7#
      • 1...Qa4
        • 2.Sxd3#
        • 2.Sf7#
      • 1...Sd6
        • 2.Sc6#
      • 1...c6
        • 2.Sxc6#
        • 2.Sf7#
      • 1...Rxg6+!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qe7#
      • 1...Rxg6+
        • 2.Sxg6#
      • 1...Kxe4
        • 2.Re6#
      • 1...Rxh4
        • 2.Re6#
      • 1...Sf6
        • 2.Rg5#
      • 1...b3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(a);N_GUARD::S(D),XP(b)
    • R(g);N_GUARD,N_PINR(G)::R1(G)
    • R(g);CHECK,XR(G)::S(D),XR(g)
    • R(g);N_GUARD,N_PINR(G),XB(I)::R1(G)
    • S(j);N_PINR(G),SBLOCK::R(G)
    • P(c);S_CUTQ(a)::S(D),XP(b)
  • Tries
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(j);N_PINR(G)::S(H)
        • R(k);::S(H)
        • Q(a);::S(H)
      • Refutation
        • R(g);CHECK,XR(G)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • R(g);CHECK,XR(G)::S(D),XR(g)
      • K(f);P-FLIGHT,XP(C)::B(I)+R(G),DCHECK
      • R(g);N_GUARD,N_PINR(G),XQ(A)::R1(G)
      • S(j);N_PINR(G),SBLOCK::R(G)
      • P(c);S_CUTQ(a)::S(D),XP(b)
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