MESON Chess Problem Database

Problem Display
PID: 259085 (8/1r1Bn2K/3pr1P1/3kp3/N2Np2p/2P1b2q/8/5Q2 w - - 0 1)

Cauveren, Jonas Ephraim

Western Morning News, 1923

(First published on Sat Mar 10 1923)

8/1r1Bn2K/3pr1P1/3kp3/N2Np2p/2P1b2q/8/5Q2

#2

7 + 10

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf1
      • 2.Bxe6#
    • 1...Qg2
      • 2.Bxe6#
    • 1...Qh1
      • 2.Bxe6#
    • 1...Qh2
      • 2.Bxe6#
    • 1...Qf3
      • 2.Bxe6#
    • 1...Qg3
      • 2.Bxe6#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Ra7
      • 2.Qb5#
    • 1...Rxd7
      • 2.Qb5#
    • 1...Bxd4
      • 2.c4#
  • Tries
    • 1.Sb6+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Rxb6!
  • Keys
    • 1.Sc2!
      • threat
        • 2.c4#
      • 1...Qxf1
        • 2.Sxe3#
      • 1...Rxd7
        • 2.Sb4#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Rc7
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD,XQ(A)::B(F),XR(h)
    • Q(b);N_GUARD::B(F),XR(h)
    • R(i);N_GUARD::QAR2(A),XR(i)
    • R(i);N_GUARD::QAR2(A)
    • R(i);N_GUARD,XB(F)::QAR2(A)
    • B(a);SBLOCK,XS(D)::P(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A)
      • Refutation
        • R(i);XS(C)
  • Actual
    • S(D);
    • Threat
      • P(B)
    • Vars
      • Q(b);N_GUARD,XQ(A)::S(D),XB(a)
      • R(i);N_GUARD,XB(F)::S(D)
      • R(i);N_GUARD::S(D),XR(i)
      • R(i);N_GUARD::S(D)
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