MESON Chess Problem Database

Problem Display
PID: 223047 (8/4p1r1/r1pNp3/2pkP1Q1/5P2/BP1Kp3/3PP3/1n1N1n2 w - - 0 1)

Bossy, Vasile Basile

La Strategie, 1886

8/4p1r1/r1pNp3/2pkP1Q1/5P2/BP1Kp3/3PP3/1n1N1n2

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qg2#
    • 1...Rh7
      • 2.Qg2#
    • 1...Sbxd2
      • 2.Sc3#
    • 1...Sxa3
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sfxd2
      • 2.Sxe3#
    • 1...Sh2
      • 2.Sxe3#
    • 1...Sg3
      • 2.Sxe3#
    • 1...exd2
      • 2.e4#
    • 1...c4+
      • 2.bxc4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sc7#
      • 1...c4+
        • 2.bxc4#
      • 1...Ra7!
    • 1.Qxg7?
      • threat
        • 2.Qg2#
      • 1...c4+
        • 2.bxc4#
      • 1...Sbxd2
        • 2.Sc3#
      • 1...Sfxd2
        • 2.Sxe3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sh2
        • 2.Sxe3#
      • 1...Sg3
        • 2.Sxe3#
      • 1...Ra4!
  • Keys
    • 1.Sc8!
      • 1...c4+
        • 2.bxc4#
      • 1...Rxa3
        • 2.Sb6#
      • 1...Rxg5
        • 2.Sxe7#
      • 1...Sbxd2
        • 2.Sc3#
      • 1...Sxa3
        • 2.Sc3#
      • 1...Sfxd2
        • 2.Sxe3#
      • 1...exd2
        • 2.e4#
      • 1...Ra4
        • 2.Sb6#
      • 1...Ra5
        • 2.Sb6#
      • 1...Rb6
        • 2.Sxb6#
      • 1...Ra7
        • 2.Sb6#
      • 1...Ra8
        • 2.Sb6#
      • 1...Rg6
        • 2.Sxe7#
      • 1...Rf7
        • 2.Qg2#
      • 1...Rh7
        • 2.Qg2#
      • 1...Rg8
        • 2.Sxe7#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sh2
        • 2.Sxe3#
      • 1...Sg3
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(j);N_GUARD::QAB(I)
    • S(a);N_GUARD,XP(B)::S(A)
    • S(a);N_GUARD,XB(D)::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(b);N_GUARD,XP(B)::S(A),XP(c)
    • S(b);N_GUARD::S(A),XP(c)
    • P(c);OGATE,XP(B)::P(C)
    • P(d);CHECK,OGATE::P(E),XP(d)
  • Tries
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • P(d);CHECK,OGATE::P(E),XP(d)
      • Refutation
        • R(f);
    • Try
      • Q(I);XR(j)
      • Threat
        • QAB(I)
      • Vars
        • P(d);CHECK,OGATE::P(E),XP(d)
        • S(a);N_GUARD,XP(B)::S(A)
        • S(b);N_GUARD,XP(B)::S(A),XP(c)
        • S(a);N_GUARD::S(A),XS(a)
        • S(b);N_GUARD::S(A),XP(c)
      • Refutation
        • R(f);
  • Actual
    • S(J);
    • Vars
      • P(d);CHECK,OGATE::P(E),XP(d)
      • R(f);N_GUARD,P_PINP(E),XB(D)::S(J)
      • R(j);N_GUARD,XQ(I)::S(J),XP(i)
      • S(a);N_GUARD,XP(B)::S(A)
      • S(a);N_GUARD,XB(D)::S(A)
      • S(b);N_GUARD,XP(B)::S(A),XP(c)
      • P(c);OGATE,XP(B)::P(C)
      • R(f);N_GUARD::S(J)
      • R(f);N_GUARD::S(J),XR(f)
      • R(j);N_GUARD::S(J),XP(i)
      • R(j);N_GUARD::QAB(I)
      • S(a);N_GUARD::S(A),XS(a)
      • S(b);N_GUARD::S(A),XP(c)
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