MESON Chess Problem Database

Problem Display
PID: 10836 (Kb5B/1n4R1/B2p3p/PrR2b1r/2Nk4/NppP3q/5P2/4Q3 w - - 0 1)

Whyatt, William Albert

2nd Prize, BCF 119. Ty., 1968-1969

Kb5B/1n4R1/B2p3p/PrR2b1r/2Nk4/NppP3q/5P2/4Q3

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Qe3#
    • 1...Qg2
      • 2.Qe3#
    • 1...Qg4
      • 2.Qe3#
    • 1...Qh1
      • 2.Qe3#
    • 1...Qh2
      • 2.Qe3#
    • 1...Qxd3
      • 2.Rgc7#
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qh4
      • 2.Qe3#
    • 1...Bxd3
      • 2.Rgg5#
    • 1...dxc5
      • 2.Rd7#
  • Tries
    • 1.Rg4+?
      • 1...Kxd3
        • 2.Rd4#
        • 2.Qd1#
      • 1...Kxc5!
    • 1.Re7+?
      • 1...Kxd3
        • 2.Qxc3#
        • 2.Qd1#
        • 2.Qe2#
      • 1...Kxc5!
    • 1.Qxc3+?
      • 1...Kxc5
        • 2.Se3#
        • 2.Sb6#
      • 1...Kxc3!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qxc3#
      • 1...Kxd3
        • 2.Rd5#
      • 1...Kxc5
        • 2.Qxc3#
      • 1...Qxd3
        • 2.Rgc7#
      • 1...Rxc5
        • 2.Rg4#
      • 1...Bxd3
        • 2.Rgg5#
      • 1...Sxc5
        • 2.Rg3#
      • 1...dxc5
        • 2.Rd7#
      • 1...c2
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD::QAB1(A)
    • Q(c);SBLOCK,XP(D)::B(K)+R(I)
    • Q(c);N_GUARD::QAB1(A),XQ(c)
    • B(f);SBLOCK,XP(D)::B(K)+R(I)
    • P(h);SBLOCK,XR(G)::B(K)+R(I),DCHECK
  • Tries
    • Try
      • R(I);CHECK
      • Refutation
        • K(d);S_FLIGHT,XR(G)
    • Try
      • R(I);CHECK
      • Refutation
        • K(d);S_FLIGHT,XR(G)
    • Try
      • Q(A);CHECK,XP(b)
      • Refutation
        • K(d);S_FLIGHT,XQ(A)
  • Actual
    • S(E);
    • Threat
      • QAB1(A),XP(b)
    • Vars
      • K(d);P-FLIGHT,P_SPINR(e),XP(D)::R(G)
      • K(d);S_FLIGHT,XR(G)::QAR2(A),XP(b)
      • Q(c);SBLOCK,XP(D)::B(K)+R(I)
      • R(e);SBLOCK,XR(G)::B(K)+R(I),DCHECK
      • B(f);SBLOCK,XP(D)::B(K)+R(I)
      • S(j);SBLOCK,XR(G)::B(K)+R(I)
      • P(h);SBLOCK,XR(G)::B(K)+R(I),DCHECK
      • P(b);::QAB1(A)
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