MESON Chess Problem Database

Problem Display
PID: 185335 (2n5/3pP1P1/QpPpRp2/2pk1NR1/B2N1P2/B2p3n/bK6/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Kudesnik, 2018

2n5/3pP1P1/QpPpRp2/2pk1NR1/B2N1P2/B2p3n/bK6/8

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qb5#
    • 1...dxc6
      • 2.Bxc6#
  • Tries
    • 1.Bb3+?
      • 1...c4
        • 2.Qxc4#
        • 2.Qb5#
      • 1...Bxb3!
    • 1.e8S?
      • threat
        • 2.Sxf6#
        • 2.Sc7#
      • 1...cxd4
        • 2.Sc7#
      • 1...fxg5
        • 2.Sf6#
        • 2.Sc7#
      • 1...dxe6
        • 2.Sxf6#
      • 1...b5!
    • 1.g8Q?
      • threat
        • 2.Re1#
        • 2.Re2#
        • 2.Re3#
        • 2.Re5#
      • 1...Sxg5
        • 2.Re5#
      • 1...Sxe7
        • 2.Re5#
        • 2.Rxe7#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Sxf4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Kc4
        • 2.Se3#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Kxe6
        • 2.g8Q#
        • 2.g8B#
      • 1...dxe6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • P(d);OGATEB::QAR2(H)
    • P(i);OGATE,XP(I)::B(C),XP(i)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • B(a);XB(C)
    • Try
      • P(K);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);XS(D)::S(K)
        • P(i);XR(J)::S(K),XP(h)
      • Refutation
        • P(f);
    • Try
      • P(L);
      • Threat
        • DUALS(4)
      • Vars
        • S(c);XR(G)::QAB(L)+R(J),DCHECK
        • P(i);OGATE,P_SPINP(i),XR(J)::QAB1(L),XP(i)
      • Refutation
        • S(c);XP(E)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(e);S_FLIGHT::S(F)
      • K(e);OGATEB,P_SPINP(f),S_FLIGHT,XP(I)::QAB(H)
      • K(e);S_FLIGHT,XR(J)::P=Q
      • P(i);SBLOCK,XR(J)::S(D)
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