MESON Chess Problem Database

Problem Display
PID: 141200 (2K4B/1pNQ4/B6p/nr4Pr/1p2k3/1PnNp3/2b3P1/8 w - - 0 1)

Berry, Charles Vincent E

1st Prize, Reading Observer, 1899

2K4B/1pNQ4/B6p/nr4Pr/1p2k3/1PnNp3/2b3P1/8

#2

9 + 10

15 British Chess Magazine 1900
14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qg4#
    • 1...Rd5
      • 2.Qg4#
    • 1...Re5
      • 2.Qg4#
    • 1...Rf5
      • 2.Qd4#
    • 1...Rb6
      • 2.Qg4#
    • 1...Bxd3
      • 2.Qg4#
    • 1...Sd5
      • 2.Qh7#
  • Tries
    • 1.Sf2+?
      • 1...Kf4
        • 2.Qg4#
      • 1...exf2!
    • 1.Sc5+?
      • 1...Rxc5
        • 2.Qg4#
      • 1...Kf4!
    • 1.Bxb5?
      • threat
        • 2.Qg4#
        • 2.Qe6#
        • 2.Qh7#
      • 1...Bxb3
        • 2.Qg4#
        • 2.Qh7#
      • 1...Bxd3
        • 2.Qg4#
      • 1...Sxb5
        • 2.Qd5#
        • 2.Qh7#
      • 1...hxg5
        • 2.Qg4#
        • 2.Qe6#
      • 1...e2
        • 2.Qe6#
      • 1...Rh4
        • 2.Qe6#
        • 2.Qh7#
      • 1...Bd1
        • 2.Qe6#
        • 2.Qh7#
      • 1...Se2
        • 2.Qe6#
        • 2.Qd5#
        • 2.Qh7#
      • 1...Sd5
        • 2.Qe6#
        • 2.Qxd5#
        • 2.Qh7#
      • 1...Sc4
        • 2.Qh7#
      • 1...Sc6
        • 2.Qg4#
        • 2.Qh7#
      • 1...Rxg5!
    • 1.Qe6+?
      • 1...Re5
        • 2.Qg4#
        • 2.Qxe5#
      • 1...Kxd3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Rc5+
        • 2.Sxc5#
      • 1...Kxd3
        • 2.Sxc3#
      • 1...Rxd5
        • 2.Qg4#
      • 1...Bxd3
        • 2.Qe6#
      • 1...Sxd5
        • 2.Qh7#
      • 1...Rb6
        • 2.Sc5#
      • 1...e2
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);P_PINS(F)::QAR2(G)
    • R(g);::QAR2(G)
    • R(g);SBLOCK::QAR1(G)
    • B(a);SBLOCK,XS(C)::QAR2(G)
    • S(b);S_CUTR(g)::QAB(G)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(G)
      • Refutation
        • P(c);XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • R(g);P_PINS(F),XS(C)::QAR2(G)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • B(E);XR(g)
      • Threat
        • DUALS(3)
      • Vars
        • B(a);XS(C)::QAR2(G)
        • P(c);::QAR2(G)
        • S(f);::QAB(G)
      • Refutation
        • R(h);XP(D)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(e);P_SPINR(g),S_FLIGHT,XS(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • R(g);CHECK,N_GUARD::S(C),XR(g)
      • K(e);P_SPINR(g),S_FLIGHT,XS(C)::QAR(G)+S(F),XS(b)
      • R(g);SBLOCK,XS(F)::QAR2(G)
      • B(a);SBLOCK,XS(C)::QAR2(G)
      • S(b);SBLOCK,XS(F)::QAB(G)
      • R(g);N_GUARD::S(C)
      • P(c);N_GUARD::S(C)
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