MESON Chess Problem Database

Problem Display
PID: 222561 (8/7Q/1P6/4pP2/pKNpk1p1/Rn1N2P1/4pP2/1B2R3 w - - 0 1)

Pradignat, Emile Leonard

Nashville Daily American, 1884

8/7Q/1P6/4pP2/pKNpk1p1/Rn1N2P1/4pP2/1B2R3

#2

11 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qh1#
    • 1...Kd5
      • 2.Qb7#
  • Tries
    • 1.Sc5+?
      • 1...Kd5
        • 2.Be4#
        • 2.Qb7#
        • 2.Qd7#
      • 1...Kf3!
    • 1.Sdxe5+?
      • 1...Kd5
        • 2.Qg8#
        • 2.Qh1#
        • 2.Qb7#
        • 2.Qd7#
        • 2.Qf7#
      • 1...d3!
    • 1.Sd2+?
      • 1...Kd5
        • 2.Qd7#
      • 1...Sxd2!
    • 1.Se3?
      • threat
        • 2.Qh1#
        • 2.Qb7#
      • 1...Kf3
        • 2.Qh1#
      • 1...Sd2
        • 2.Qb7#
      • 1...Sa5
        • 2.Qh1#
      • 1...Sc5
        • 2.Qh1#
      • 1...dxe3!
    • 1.Sd6+?
      • 1...Kf3
        • 2.Qh1#
      • 1...Kd5!
    • 1.Rxe2+?
      • 1...Kd5
        • 2.Qb7#
        • 2.Qd7#
      • 1...Kf3!
    • 1.Qd7?
      • 1...Sa1
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sc1
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sd2
        • 2.Sc5#
        • 2.Sxd2#
      • 1...Sa5
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sc5
        • 2.Sxc5#
        • 2.Sd2#
      • 1...Kf3!
    • 1.Qf7?
      • 1...Sa1
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sc1
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sd2
        • 2.Sc5#
        • 2.Sxd2#
      • 1...Sa5
        • 2.Sc5#
        • 2.Sd2#
      • 1...Sc5
        • 2.Sxc5#
        • 2.Sd2#
      • 1...Kf3!
    • 1.f6+?
      • 1...Kf3
        • 2.Qh1#
      • 1...Kd5!
  • Keys
    • 1.Ba2!
      • 1...Kxd3
        • 2.Bb1#
      • 1...Kf3
        • 2.Qh1#
      • 1...Kd5
        • 2.Qb7#
      • 1...Sa1
        • 2.Sd2#
      • 1...Sc1
        • 2.Sd2#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sa5
        • 2.Sd2#
      • 1...Sc5
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(a),S_FLIGHT::QAB(K)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(e);N_SPINP(a),P_SPINS(b),S_FLIGHT
    • Try
      • S(E);CHECK,XP(g)
      • Refutation
        • P(d);
    • Try
      • S(H);CHECK
      • Vars
        • K(e);N_SPINP(a),S_FLIGHT::QAR2(K)
      • Refutation
        • S(b);XS(H)
    • Try
      • S(H);N_PINP(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(e);S_FLIGHT::QAB(K)
        • S(b);::QAB(K)
      • Refutation
        • P(d);XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • K(e);N_SPINP(a),S_FLIGHT::QAB(K)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
    • Try
      • R(B);CHECK,XP(a)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(K);
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
    • Try
      • Q(K);
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
    • Try
      • P(I);CHECK
      • Vars
        • K(e);N_SPINP(a),S_FLIGHT::QAB(K)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(e);N_SPINP(a),OGATEB,P_SPINS(b),S_FLIGHT,XS(E)::B(A)
      • K(e);N_SPINP(a),S_FLIGHT::QAB(K)
      • S(b);N_GUARD::S(H)
      • S(b);N_GUARD::S(H),XS(b)
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