MESON Chess Problem Database

Problem Display
PID: 261585 (K1B5/8/2p5/p1kpN3/P2Rp2B/8/1P3Q2/8 w - - 0 1)

Sutter, Alfred Ernst

Neue Zurcher Zeitung, 1928

K1B5/8/2p5/p1kpN3/P2Rp2B/8/1P3Q2/8

#2

8 + 5

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Kb6
        • 2.Bd8#
      • 1...Kd6
        • 2.Qg3#
        • 2.Qh2#
        • 2.Qf4#
      • 1...exd3!
    • 1.Rxe4+?
      • 1...d4
        • 2.Qxd4#
      • 1...Kd6!
    • 1.Qg3?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kb6
        • 2.Sd7#
      • 1...Kd6
        • 2.Sd3#
      • 1...e3!
    • 1.Qc2+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kb6
        • 2.Bd8#
        • 2.Qxc6#
      • 1...Kd6!
    • 1.Qf6?
      • threat
        • 2.Sd7#
      • 1...Kb6
        • 2.Qxc6#
      • 1...Kxd4!
    • 1.Qf8+?
      • 1...Kb6
        • 2.Bd8#
      • 1...Kxd4!
  • Keys
    • 1.Qf4!
      • 1...Kxd4
        • 2.Bf2#
      • 1...Kb6
        • 2.Sd7#
      • 1...Kd6
        • 2.Sd3#
      • 1...e3
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);N_GUARD,S_CUTP(a),S_FLIGHT::B(E)
      • Refutation
        • P(a);XS(F)
    • Try
      • R(D);CHECK,XP(a)
      • Vars
        • P(d);P_SPINP(d)::QAB1(B),XP(d)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XR(D)::QAB1(B)
        • K(c);N_GUARD,S_FLIGHT::S(F)
        • K(c);N_GUARD,P_SPINP(d),S_CUTP(a),S_FLIGHT::QAB(B)+S(F)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT,XR(D)::QAB1(B)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • S(F)
      • Vars
        • K(c);N_GUARD,P_SPINP(e),S_FLIGHT::QAR1(B),XP(e)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::B(E)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
  • Actual
    • Q(B);
    • Vars
      • K(c);OGATEB,P_SPINP(a),S_FLIGHT,XR(D)::B(E)
      • K(c);N_GUARD,S_FLIGHT::S(F)
      • K(c);N_GUARD,P_SPINP(d),S_CUTP(a),S_FLIGHT::QAB(B)+S(F)
      • P(a);::S(F)
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