MESON Chess Problem Database

Problem Display
PID: 142426 (8/7B/4n3/R7/5p2/2B5/qPr2P2/2k1K1QR w K - 0 1)

Melvin, Herbert A ('Hamel' or Zaak, HA)

Stratford Express, 1947

(First published on Fri Dec 26 1947)

8/7B/4n3/R7/5p2/2B5/qPr2P2/2k1K1QR

#2

8 + 5

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Ra1#
    • 1...Qc4
      • 2.Ra1#
    • 1...Qd5
      • 2.Ra1#
    • 1...Qa1
      • 2.Rxa1#
    • 1...Re2+
      • 2.Kxe2#
    • 1...Rxf2
      • 2.Kxf2#
  • Tries
    • 1.Rxa2?
      • threat
        • 2.Ra1#
      • 1...Re2+
        • 2.Kxe2#
      • 1...Rxb2
        • 2.Bxb2#
      • 1...Rxc3
        • 2.Ke2#
      • 1...Kb1!
    • 1.Qg3?
      • threat
        • 2.0-0#
      • 1...Re2+
        • 2.Kxe2#
      • 1...Kb1
        • 2.0-0#
      • 1...Rxf2
        • 2.Kxf2#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Qc4
        • 2.Ra1#
      • 1...Qd5
        • 2.Ra1#
      • 1...Rd2!
  • Keys
    • 1.Qg7!
      • threat
        • 2.0-0#
      • 1...Re2+
        • 2.Kxe2#
      • 1...Kb1
        • 2.0-0#
      • 1...Rxf2
        • 2.Kxf2#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Rd2
        • 2.Bxd2#
      • 1...Qc4
        • 2.Ra1#
      • 1...Qd5
        • 2.Ra1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE::R(G)
    • Q(b);OGATE::R(G),XQ(b)
    • R(c);CHECK::QAR(B)+K(A),XR(c)
    • R(c);XP(E)::QAR(B)+K(A),XR(c)
  • Tries
    • Try
      • R(G);XQ(b)
      • Threat
        • R(G)
      • Vars
        • R(c);CHECK::QAR(B)+K(A),XR(c)
        • R(c);OGATE,XP(D)::B(F),XR(c)
        • R(c);XB(F)::QAR(B)+K(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINR(c)
    • Try
      • Q(B);
      • Threat
        • 0-0
      • Vars
        • R(c);CHECK::R(C)+K(A),XR(c)
        • K(a);P-FLIGHT,P_SPINR(c)::0-0
        • R(c);XP(E)::R(C)+K(A),XR(c)
        • R(c);OGATE,XB(F)::QAR2(B),XR(c)
        • Q(b);OGATE::R(G)
      • Refutation
        • R(c);
  • Actual
    • Q(B);
    • Threat
      • 0-0
    • Vars
      • R(c);CHECK::R(C)+K(A),XR(c)
      • K(a);P-FLIGHT,P_SPINR(c)::0-0
      • R(c);XP(E)::R(C)+K(A),XR(c)
      • R(c);OGATE,XB(F)::QAR2(B),XR(c)
      • R(c);N_GUARD::B(F),XR(c)
      • Q(b);OGATE::R(G)
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