MESON Chess Problem Database

Problem Display
PID: 53053 (2Q5/2pn1p2/P1Rb1B1p/3kpR1K/4N3/5B2/8/5N2 w - - 0 1)

Larsen, Peder Andreas

Shakhmatny Zhurnal, 0000

2Q5/2pn1p2/P1Rb1B1p/3kpR1K/4N3/5B2/8/5N2

#2

9 + 7

58 Tijdschrift vd NSB 1893

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qb7#
    • 1...Ke6
      • 2.Rxe5#
  • Tries
    • 1.Se3+?
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Sc5#
        • 2.Rxe5#
        • 2.Qe8#
      • 1...Kd4!
    • 1.Sf2+?
      • 1...Kd4
        • 2.Rf4#
      • 1...Ke6!
    • 1.Seg3+?
      • 1...Ke6
        • 2.Qe8#
      • 1...Kd4!
    • 1.Sxd6+?
      • 1...Ke6
        • 2.Qe8#
      • 1...Kd4!
  • Keys
    • 1.Rf4!
      • 1...Sxf6+
        • 2.Sxf6#
      • 1...Kd4
        • 2.Sf2#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Sc5#
      • 1...exf4
        • 2.Sg5#
      • 1...Ba3
        • 2.Sc3#
      • 1...Bb4
        • 2.Sc3#
      • 1...Bc5
        • 2.Sc3#
      • 1...Be7
        • 2.Sc3#
      • 1...Bf8
        • 2.Sc3#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...Sb8
        • 2.Sc3#
      • 1...Sf8
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),OGATEB,P_SPINP(e),S_FLIGHT,XR(G)::QAB1(I)
    • K(a);N_SPINP(b),P_SPINB(c),P_SPINS(f),S_FLIGHT::R1(D),XP(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);N_SPINP(b),P_SPINP(e),S_FLIGHT,XR(G)::QAB1(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • K(a);N_SPINP(b),P_SPINB(c),P_SPINS(f),S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);N_SPINP(b),P_SPINB(c),P_SPINS(f),S_FLIGHT::QAR2(I)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK,XB(c)
      • Vars
        • K(a);N_SPINP(b),P_SPINS(f),S_FLIGHT::QAR2(I)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(D);N_PINP(b)
    • Vars
      • S(f);CHECK,XB(H)::B(B)+S(C),DCHECK,XS(f)
      • K(a);P-FLIGHT,P_SPINP(b)::R(D)+S(C)
      • K(a);OGATEB,P_SPINP(e),S_FLIGHT,XR(G)::QAB1(I)
      • K(a);P_SPINB(c),P_SPINS(f),S_FLIGHT::S(C)
      • P(b);N_GUARD,XR(D)::B(B)+S(C)
      • B(c);::B(B)+S(C),DCHECK
      • S(f);::B(B)+S(C),DCHECK
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