MESON Chess Problem Database

Problem Display
PID: 198230 (K7/1Qp2p2/p2p4/1p3B1R/rr3kN1/5b1P/4n3/4BRn1 w - - 0 1)

Sparke, Arthur M

3rd Prize, Club Argentino de Ajedrez, 1920

K7/1Qp2p2/p2p4/1p3B1R/rr3kN1/5b1P/4n3/4BRn1

#2

8 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sxh3
      • 2.Rxf3#
      • 2.Qxf3#
    • 1...Sg3
      • 2.Bd2#
    • 1...Sd4
      • 2.Qe4#
    • 1...d5
      • 2.Qxc7#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Rf5#
      • 1...Sxh3
        • 2.Qxf3#
      • 1...Sg3
        • 2.Bd2#
      • 1...Sd4
        • 2.Qe4#
      • 1...f5
        • 2.Rxf5#
      • 1...Re4!
    • 1.Bd3?
      • threat
        • 2.Rf5#
      • 1...Sxh3
        • 2.Qxf3#
      • 1...Sg3
        • 2.Bd2#
      • 1...Sd4
        • 2.Qe4#
      • 1...f5
        • 2.Rxf5#
      • 1...Re4!
    • 1.Bg6?
      • threat
        • 2.Rf5#
      • 1...Sxh3
        • 2.Qxf3#
      • 1...Sg3
        • 2.Bd2#
      • 1...Sd4
        • 2.Qe4#
      • 1...d5
        • 2.Qxc7#
      • 1...c6
        • 2.Qxf7#
      • 1...f5
        • 2.Rxf5#
      • 1...fxg6!
  • Keys
    • 1.Bh7!
      • threat
        • 2.Rf5#
      • 1...Sxh3
        • 2.Qxf3#
      • 1...Sg3
        • 2.Bd2#
      • 1...Sd4
        • 2.Qe4#
      • 1...d5
        • 2.Qxc7#
      • 1...c6
        • 2.Qxf7#
      • 1...f5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::B(A)
    • S(b);S_CUTR(e)::QAR1(G)
    • P(i);N_PINQ(G)::QAB(G),XP(j)
  • Tries
    • Try
      • B(E);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR1(G),XB(c)
        • S(b);SBLOCK::B(A)
        • S(b);S_CUTR(e)::QAR1(G)
        • P(k);::R1(F),XP(k)
      • Refutation
        • R(e);N_PINQ(G)
    • Try
      • B(E);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR1(G),XB(c)
        • S(b);SBLOCK::B(A)
        • S(b);S_CUTR(e)::QAR1(G)
        • P(k);::R1(F),XP(k)
      • Refutation
        • R(e);N_PINQ(G)
    • Try
      • B(E);
      • Threat
        • R1(F)
      • Vars
        • S(a);N_GUARD,XP(C)::QAR1(G),XB(c)
        • S(b);SBLOCK::B(A)
        • S(b);S_CUTR(e)::QAR1(G)
        • P(i);N_PINQ(G)::QAB(G),XP(j)
        • P(j);N_PINQ(G)::QAR(G),XP(k)
        • P(k);::R1(F),XP(k)
      • Refutation
        • P(k);XB(E)
  • Actual
    • B(E);
    • Threat
      • R1(F)
    • Vars
      • S(a);N_GUARD,XP(C)::QAR1(G),XB(c)
      • S(b);SBLOCK::B(A)
      • S(b);S_CUTR(e)::QAR1(G)
      • P(i);N_PINQ(G)::QAB(G),XP(j)
      • P(j);N_PINQ(G)::QAR(G),XP(k)
      • P(k);::R1(F),XP(k)
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