MESON Chess Problem Database

Problem Display
PID: 142420 (2bR4/1q1B4/Q7/1r1p3K/7n/N1bkNP2/pPR1pB2/2n1r3 w - - 0 1)

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

Stratford Express, 1944

(First published on Fri Aug 4 1944)

2bR4/1q1B4/Q7/1r1p3K/7n/N1bkNP2/pPR1pB2/2n1r3

#2

10 + 11

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Bxb5+?
      • 1...Kd4
        • 2.Sg4#
      • 1...Qxb5!
    • 1.Rxc3+?
      • 1...Kd4
        • 2.Sec4#
        • 2.Sg4#
        • 2.Qf6#
      • 1...Kd2!
    • 1.Qxb5+?
      • 1...Kd4
        • 2.Sg4#
      • 1...Qxb5!
  • Keys
    • 1.Sec4!
      • threat
        • 2.Rxc3#
      • 1...dxc4+
        • 2.Bf5#
      • 1...d4+
        • 2.Se5#
      • 1...Rxb2
        • 2.Sxb2#
        • 2.Se5#
      • 1...Bxb2
        • 2.Sxb2#
      • 1...Sxf3
        • 2.Qg6#
      • 1...Rb3
        • 2.Se5#
      • 1...Bd2
        • 2.Se5#
        • 2.Rxd2#
      • 1...Bb4
        • 2.Se5#
      • 1...Bd4
        • 2.Rd2#
      • 1...Ba5
        • 2.Se5#
      • 1...Be5
        • 2.Sxe5#
        • 2.Rd2#
      • 1...Bf6
        • 2.Rd2#
      • 1...Bg7
        • 2.Rd2#
      • 1...Bh8
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(I);CHECK,P_PINP(i),XR(h)
      • Vars
        • K(f);P-FLIGHT::B(C)+S(E)
      • Refutation
        • Q(j);P_SPINQ(j),XB(I)
    • Try
      • R(B);CHECK,XB(e)
      • Refutation
        • K(f);N_SPINR(h),P-FLIGHT
    • Try
      • Q(H);CHECK,XR(h)
      • Vars
        • K(f);P-FLIGHT::B(C)+S(E)
      • Refutation
        • Q(j);XQ(H)
  • Actual
    • S(E);N_PINR(h)
    • Threat
      • R1(B),XB(e)
    • Vars
      • P(i);CHECK,XS(E)::R(J)+B(I),DCHECK
      • P(i);CHECK,S_CUTB(e)::S(E)
      • B(e);XP(A)::S(E),XB(e)
      • S(g);N_GUARD,XP(F)::QAB(H)
      • R(h);::QAB(H)+S(E),DCHECK
      • B(e);N_GUARD::S(E)
      • B(e);N_GUARD::R1(B)
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