MESON Chess Problem Database

Problem Display
PID: 169046 (1nN3N1/Rn1kPp1r/Qp1P1RB1/1b5p/2P2K2/8/8/8 w - - 0 1)

Abramenko, Sergey Petrovich

Kapustin, Fedor Mikhailovich

SuperProblem 015. TT, 2012

1nN3N1/Rn1kPp1r/Qp1P1RB1/1b5p/2P2K2/8/8/8

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qxb5#
    • 1...Kxc8
      • 2.Qxb7#
  • Tries
    • 1.Sxb6+?
      • 1...Kc6
        • 2.Qxb5#
      • 1...Ke8!
    • 1.Bf5+?
      • 1...Kc6
        • 2.Qxb5#
        • 2.Qxb6#
      • 1...Ke8!
    • 1.Bxf7?
      • threat
        • 2.Qxb7#
        • 2.e8Q#
      • 1...Kc6
        • 2.Qxb5#
      • 1...Kxc8
        • 2.Qxb7#
      • 1...Bxa6
        • 2.e8Q#
      • 1...Sxa6
        • 2.e8Q#
      • 1...Bc6
        • 2.Sxb6#
        • 2.e8Q#
      • 1...Rxf7!
    • 1.Rxb7+?
      • 1...Kc6
        • 2.Rc7#
        • 2.Qxb6#
      • 1...Kxc8
        • 2.Rc7#
      • 1...Ke8!
  • Keys
    • 1.Re6!
      • threat
        • 2.e8Q#
      • 1...Kc6
        • 2.Qxb5#
      • 1...Kxe6
        • 2.Bf5#
      • 1...Kxc8
        • 2.Qxb7#
      • 1...Ke8
        • 2.Sf6#

FEATURES

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