MESON Chess Problem Database

Problem Display
PID: 167296 (8/4R2K/4n3/2n3p1/1RNpk1N1/6P1/QP6/3B4 w - - 0 1)

Bayer, Konrad

Nuova Rivista degli Scacchi, 1876

8/4R2K/4n3/2n3p1/1RNpk1N1/6P1/QP6/3B4

#2

9 + 5

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sf2#
      • 2.Qb1#
    • 1...Kf5
      • 2.Sd6#
    • 1...Sd3
      • 2.Sd6#
    • 1...d3
      • 2.Sce3#
      • 2.Sd6#
  • Tries
    • 1.Sd2+?
      • 1...Kf5
        • 2.Rf7#
        • 2.Qd5#
      • 1...Kd3!
    • 1.Sce3?
      • 1...Sb3
        • 2.Qb1#
      • 1...Sd3
        • 2.Qd5#
        • 2.Qa8#
      • 1...Sa4
        • 2.Qb1#
      • 1...Sa6
        • 2.Qb1#
      • 1...Sb7
        • 2.Qb1#
      • 1...Sd7
        • 2.Qb1#
      • 1...Kd3!
    • 1.Sb6?
      • 1...Kf5
        • 2.Qd5#
      • 1...Sb3
        • 2.Qb1#
      • 1...Sd3
        • 2.Qd5#
      • 1...Sa4
        • 2.Qb1#
      • 1...Sa6
        • 2.Qb1#
      • 1...Sb7
        • 2.Qb1#
      • 1...Sd7
        • 2.Qb1#
      • 1...Kd3!
    • 1.Sf2+?
      • 1...Kf5
        • 2.Rf7#
      • 1...Kd5!
    • 1.Sf6+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf5!
    • 1.Bf3+?
      • 1...Kd3
        • 2.Qb1#
      • 1...Kf5
        • 2.Sd6#
        • 2.Rf7#
      • 1...Kxf3!
    • 1.Rb5?
      • 1...Kd3
        • 2.Sf2#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sb3
        • 2.Sf2#
      • 1...Sd3
        • 2.Sd2#
        • 2.Sd6#
        • 2.Sf6#
        • 2.Qa8#
      • 1...Sa4
        • 2.Sf2#
      • 1...Sa6
        • 2.Sf2#
      • 1...Sb7
        • 2.Sf2#
      • 1...Sd7
        • 2.Sf2#
      • 1...d3!
    • 1.Rxe6+?
      • 1...Kd3
        • 2.Sf2#
        • 2.Qb1#
      • 1...Kd5
        • 2.Sce3#
        • 2.Sb6#
      • 1...Kf5
        • 2.Sd6#
        • 2.Re5#
      • 1...Sxe6!
    • 1.Qa8+?
      • 1...Kd3
        • 2.Sf2#
        • 2.Sge5#
        • 2.Qf3#
      • 1...Kf5
        • 2.Sd6#
        • 2.Rf7#
        • 2.Qd5#
      • 1...Sb7!
  • Keys
    • 1.Qa5!
      • 1...Kd3
        • 2.Sf2#
      • 1...Kd5
        • 2.Bf3#
      • 1...Kf5
        • 2.Sd6#
      • 1...Sb3
        • 2.Sf2#
      • 1...Sd3
        • 2.Sd2#
        • 2.Sd6#
        • 2.Sf6#
      • 1...Sa4
        • 2.Sf2#
      • 1...Sa6
        • 2.Sf2#
      • 1...Sb7
        • 2.Sf2#
      • 1...Sd7
        • 2.Sf2#
      • 1...d3
        • 2.Sce3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINS(e),S_FLIGHT::S(F)
    • S(c);SBLOCK::S(F)
  • Tries
    • Try
      • S(F);CHECK,P_PINP(a)
      • Refutation
        • K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT
    • Try
      • S(F);P_PINP(a)
      • Vars
        • S(c);N_GUARD::QAB(B)
      • Refutation
        • K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT
    • Try
      • S(F);P_PINP(a)
      • Vars
        • K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT::QAR2(B)
        • S(c);N_GUARD::QAB(B)
        • S(c);SBLOCK::QAB1(B)
      • Refutation
        • K(b);N_SPINP(a),N_SPINS(e),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT::R(H)
      • Refutation
        • K(b);N_SPINS(e),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINS(e),S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT::QAB(B)
      • Refutation
        • K(b);N_SPINS(e),S_FLIGHT,XB(A)
    • Try
      • R(E);
      • Vars
        • K(b);N_SPINS(e),S_FLIGHT::S(G)
        • K(b);N_SPINS(e),P_SPINS(c),S_FLIGHT::B(A)
        • K(b);N_SPINS(e),P_SPINS(c),S_FLIGHT::S(F)
        • S(c);::S(G)
      • Refutation
        • P(a);
    • Try
      • R(H);CHECK,XS(e)
      • Refutation
        • S(c);XR(H)
    • Try
      • Q(B);CHECK
      • Refutation
        • S(c);
  • Actual
    • Q(B);
    • Vars
      • K(b);N_SPINS(e),S_FLIGHT::S(G)
      • K(b);N_SPINS(e),P_SPINS(c),S_FLIGHT::B(A)
      • K(b);N_SPINS(e),P_SPINS(c),S_FLIGHT::S(F)
      • S(c);::S(G)
      • P(a);SBLOCK::R(E)+S(F)
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