MESON Chess Problem Database

Problem Display
PID: 258651 (4B3/P1PN4/1pppp3/3k4/2p4b/1p2PK2/2PN1n2/1Q6 w - - 0 1)

Kapustin, Fedor Mikhailovich

Tkachenko, Sergiy Ivanovich

Problemist Ukraini, 2022

4B3/P1PN4/1pppp3/3k4/2p4b/1p2PK2/2PN1n2/1Q6

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Qxb3#
    • 1...c5
      • 2.a8Q#
      • 2.a8B#
    • 1...e5
      • 2.Bf7#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Qxb3#
      • 1...c5
        • 2.a8Q#
        • 2.a8B#
      • 1...e5
        • 2.Bf7#
      • 1...Bf6
        • 2.Sexf6#
      • 1...Sd1
        • 2.Qxd1#
      • 1...Sxe4!
    • 1.Qb2?
      • threat
        • 2.Qd4#
      • 1...c5
        • 2.Sxb6#
        • 2.a8Q#
        • 2.a8B#
      • 1...e5
        • 2.Bf7#
      • 1...c3
        • 2.Qxb3#
      • 1...Bf6!
    • 1.Qxb3?
      • threat
        • 2.Qxc4#
      • 1...cxb3
        • 2.c4#
      • 1...c5
        • 2.a8Q#
        • 2.a8B#
      • 1...b5!
    • 1.a8S?
      • threat
        • 2.Saxb6#
      • 1...e5
        • 2.Bf7#
      • 1...b5
        • 2.Sab6#
      • 1...c5!
    • 1.c8S?
      • threat
        • 2.Scxb6#
      • 1...c5
        • 2.a8Q#
        • 2.a8B#
      • 1...e5
        • 2.Bf7#
      • 1...b5
        • 2.Scb6#
      • 1...Bd8!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Scxb6#
      • 1...Kxc4
        • 2.Qxb3#
      • 1...c5
        • 2.Sdxb6#
      • 1...e5
        • 2.Bf7#
      • 1...b5
        • 2.Scb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAB(A),XP(b)
    • P(g);::P=Q
    • P(i);OGATEB::B(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(c);OGATEB::QAB(A),XP(b)
        • P(g);::P=Q
        • P(i);OGATEB::B(I)
        • B(d);N_GUARD::S(C),XB(d)
        • S(a);N_GUARD::QAR(A),XS(a)
      • Refutation
        • S(a);XS(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(i);OGATEB::B(I)
        • P(c);OGATEB::QAB(A),XP(b)
      • Refutation
        • B(d);
    • Try
      • Q(A);P_PINP(c),XP(b)
      • Threat
        • QAB1(A),XP(c)
      • Vars
        • P(c);N_SPINP(c),OGATE,XQ(A)::P(B)
        • P(g);::P=Q
      • Refutation
        • P(f);
    • Try
      • P(F);
      • Threat
        • S(F),XP(f)
      • Vars
        • P(i);OGATEB::B(I)
        • P(f);::S(F)
      • Refutation
        • P(g);
    • Try
      • P(G);
      • Threat
        • S(G),XP(f)
      • Vars
        • P(g);::P=Q
        • P(i);OGATEB::B(I)
        • P(f);::S(G)
      • Refutation
        • B(d);
  • Actual
    • S(C);XP(c)
    • Threat
      • S(C),XP(f)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(C)::QAB1(A),XP(b)
      • P(g);SBLOCK::S(H),XP(f)
      • P(i);OGATEB::B(I)
      • P(f);::S(C)
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