MESON Chess Problem Database

Problem Display
PID: 148058 (3K4/3N4/4p3/5ppB/4k1r1/1R4P1/1nR2B2/1Q3b2 w - - 0 1)

Silvera, Arthur P

Columbia Chess Chronicle, 1889

(First published on Fri Aug 30 1889)

3K4/3N4/4p3/5ppB/4k1r1/1R4P1/1nR2B2/1Q3b2

#2

8 + 7

574 Manchester Weekly Times 1889
15 British Chess Magazine 1910
14868 Pirnie Collection 2013
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Bf3#
    • 1...Bd3
      • 2.Qh1#
    • 1...Bc4
      • 2.Qh1#
    • 1...Bb5
      • 2.Qh1#
    • 1...Ba6
      • 2.Qh1#
    • 1...e5
      • 2.Sf6#
  • Tries
    • 1.Rcxb2+?
      • 1...Bd3
        • 2.Qxd3#
        • 2.Qh1#
      • 1...Kd5!
    • 1.Rd2+?
      • 1...Bd3
        • 2.Qh1#
      • 1...Sd3!
    • 1.Rc5+?
      • 1...Bd3
        • 2.Qh1#
      • 1...Sd3!
    • 1.Qe1+?
      • 1...Kd5
        • 2.Qe5#
      • 1...Be2!
    • 1.Qxb2?
      • threat
        • 2.Sf6#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Rxg3
        • 2.Qd4#
        • 2.Qe5#
      • 1...f4
        • 2.Qe5#
      • 1...e5
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Bd3!
  • Keys
    • 1.Rd3!
      • 1...Kxd3
        • 2.Sc5#
      • 1...Rxg3
        • 2.Rd4#
      • 1...Bxd3
        • 2.Qh1#
      • 1...Sxd3
        • 2.Qb7#
      • 1...f4
        • 2.Bg6#
      • 1...Rf4
        • 2.Rd4#
      • 1...Rh4
        • 2.Rd4#
      • 1...Be2
        • 2.Rxe2#
      • 1...Bg2
        • 2.Re2#
      • 1...Bh3
        • 2.Re2#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sa4
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...e5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 11
    • REMOVED MATES = 3
  • Sets
    • R(d);OGATE::B(F)
    • B(a);OGATE::QAB(A)
    • P(g);SBLOCK::S(G)
  • Tries
    • Try
      • R(B);CHECK,XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAB(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • R(B);CHECK
      • Vars
        • B(a);OGATE,P_SPINB(a)::QAB(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(3)
      • Vars
        • K(c);S_FLIGHT::QAR1(A)
        • P(e);::QAR1(A)
      • Refutation
        • B(a);
  • Actual
    • R(D);
    • Vars
      • K(c);S_FLIGHT,XR(D)::S(G)
      • R(d);XP(E)::R1(D)
      • B(a);OGATE,SBLOCK,XR(D)::QAB(A)
      • S(b);OGATE,SBLOCK,XR(D)::QAB(A)
      • P(e);OGATEB::B(F)
      • R(d);::R1(D)
      • B(a);N_GUARD::R(B),XB(a)
      • B(a);N_GUARD::R(B)
      • S(b);N_GUARD::R(B)
      • S(b);N_GUARD::R(B),XS(b)
      • P(g);SBLOCK::S(G)
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