MESON Chess Problem Database

Problem Display
PID: 255133 (1Q6/4p3/N1ppp3/N7/r2k1B1K/P2p1P2/3P4/8 w - - 0 1)

Bolus, Andrew

English Mechanic and World of Science, 1889

(First published on Fri May 10 1889)

1Q6/4p3/N1ppp3/N7/r2k1B1K/P2p1P2/3P4/8

#2

8 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Be3#
      • 2.Be5#
      • 2.Qe5#
      • 2.Qb2#
  • Tries
    • 1.Sxc6+?
      • 1...Kd5
        • 2.Qb5#
      • 1...Kc4!
    • 1.Qa7+?
      • 1...Kd5
        • 2.Sc7#
      • 1...c5!
    • 1.Qb3?
      • threat
        • 2.Sxc6#
      • 1...Rc4
        • 2.Qxc4#
      • 1...c5
        • 2.Sc6#
      • 1...Rxa5!
    • 1.Qb4+?
      • 1...Kd5
        • 2.Sc7#
      • 1...Rxb4!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Sc7#
      • 1...c5!
  • Keys
    • 1.Sc7!
      • 1...Kc5
        • 2.Qa7#
      • 1...Rxa3
        • 2.Qb4#
      • 1...Rxa5
        • 2.Qb4#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Rc4
        • 2.Sb3#
      • 1...c5
        • 2.Qb2#
      • 1...d5
        • 2.Sxe6#
      • 1...e5
        • 2.Be3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK,XP(d)
      • Vars
        • K(c);P-FLIGHT,P_PINB(D)::QAR2(H)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_PINB(D),S_CUTP(d)::S(G)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(H);
      • Threat
        • S(F),XP(d)
      • Vars
        • R(b);N_GUARD::QAR1(H),XR(b)
        • P(d);::S(F)
      • Refutation
        • R(b);XS(F)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT,S_CUTR(b)::S(G)
      • Refutation
        • R(b);XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P-FLIGHT,P_PINB(D),S_CUTP(d)::S(G)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • S(G);
    • Vars
      • K(c);P_PINB(D),S_CUTP(d),S_FLIGHT::QAB(H)
      • R(b);N_GUARD,XP(B)::QAR2(H)
      • R(b);N_GUARD,XS(F)::QAR2(H)
      • R(b);N_GUARD::QAR2(H),XR(b)
      • R(b);SBLOCK::S(F)
      • P(d);SBLOCK::QAB(H)
      • P(e);SBLOCK::S(G),XP(f)
      • P(f);SBLOCK::B(D)
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