MESON Chess Problem Database

Problem Display
PID: 108552 (8/2p1Q1NK/6pp/r4P2/n3pkN1/r5RP/4P2P/4n3 w - - 0 1)

Kapros, Jorge Marcelo

O Estado de Sao Paulo, 1983

8/2p1Q1NK/6pp/r4P2/n3pkN1/r5RP/4P2P/4n3

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.e3#
    • 1...Ra2
      • 2.e3#
    • 1...Rxf5
      • 2.Se6#
    • 1...Sd3
      • 2.e3#
    • 1...Sc3
      • 2.e3#
    • 1...gxf5
      • 2.Sh5#
      • 2.Se6#
  • Tries
    • 1.Kxg6?
      • threat
        • 2.Sh5#
        • 2.Se6#
      • 1...Rxf5
        • 2.Se6#
      • 1...Re5
        • 2.Sh5#
        • 2.Qxe5#
      • 1...Sc5
        • 2.Sh5#
        • 2.Qe5#
        • 2.Qxc7#
      • 1...e3
        • 2.Sh5#
        • 2.Qb4#
      • 1...h5
        • 2.Sxh5#
        • 2.Se6#
        • 2.Qg5#
      • 1...Ra6+!
    • 1.Kxh6?
      • threat
        • 2.Qg5#
      • 1...Rxf5
        • 2.Se6#
      • 1...e3
        • 2.Qb4#
      • 1...g5
        • 2.Qxg5#
      • 1...Sf3!
    • 1.Sf2?
      • threat
        • 2.Qxe4#
      • 1...gxf5
        • 2.Sh5#
      • 1...Re3
        • 2.Rg4#
      • 1...Re5
        • 2.Qh4#
      • 1...Sc3
        • 2.e3#
      • 1...Sc5
        • 2.Qxc7#
      • 1...e3
        • 2.Rg4#
        • 2.Qe4#
      • 1...Rxg3!
    • 1.Sh5+?
      • 1...Kxf5
        • 2.Sxh6#
        • 2.Qf6#
      • 1...gxh5!
  • Keys
    • 1.Se6+!
      • 1...Kxf5
        • 2.Qf6#
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::P(A)
    • R(f);SBLOCK,XP(F)::S(H)
    • S(a);S_CUTR(b)::P(A)
    • S(c);S_CUTR(b)::P(A)
  • Tries
    • Try
      • K(I);S_FLIGHT,XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XP(F)::S(H)
      • Refutation
        • R(f);CHECK
    • Try
      • K(I);P-FLIGHT,XP(h)
      • Threat
        • QAB1(G)
      • Vars
        • R(f);SBLOCK,XP(F)::S(H)
        • P(d);OGATEB::QAR(G)
        • P(g);::QAB1(G),XP(g)
      • Refutation
        • S(a);
    • Try
      • S(E);
      • Threat
        • QAR1(G),XP(d)
      • Vars
        • P(g);N_GUARD,SBLOCK,XP(F)::S(H)
        • R(b);SBLOCK::R1(C)
        • R(f);SBLOCK::QAR2(G)
        • S(c);S_CUTR(b)::P(A)
        • S(c);S_CUTR(f)::QAB(G),XP(i)
      • Refutation
        • R(b);XR(C)
    • Try
      • S(H);CHECK
      • Refutation
        • P(g);XS(H)
  • Actual
    • S(H);CHECK
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