MESON Chess Problem Database

Problem Display
PID: 222427 (8/2K1p3/8/2Nk1p2/P3NP2/P2p4/3P4/Q7 w - - 0 1)

Donata Fonda, Gian

Brooklyn Chess Chronicle, 1883

8/2K1p3/8/2Nk1p2/P3NP2/P2p4/3P4/Q7

#2

8 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qe5#
      • 1...Kxc5
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...exd6!
    • 1.Sf6+?
      • 1...Kc4
        • 2.Qc3#
      • 1...Kxc5
        • 2.Qc3#
      • 1...exf6!
    • 1.Qb1?
      • threat
        • 2.Qxd3#
      • 1...Kc4
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...fxe4!
    • 1.Qf1?
      • threat
        • 2.Qxd3#
      • 1...Kc4
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...fxe4!
  • Keys
    • 1.Se6!
      • 1...Kc4
        • 2.Qa2#
      • 1...Kxe4
        • 2.Qh1#
      • 1...Kxe6
        • 2.Qa2#
      • 1...fxe4
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT,XS(G)::QAR2(A)
        • P(d);::QAR1(A),XP(d)
      • Refutation
        • P(d);XS(E)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
        • K(b);P-FLIGHT,XS(G)::QAR2(A)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(A),XP(a)
        • K(b);P-FLIGHT::QAR1(A),XP(a)
      • Refutation
        • P(c);XS(E)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(A),XP(a)
        • K(b);P-FLIGHT::QAR1(A),XP(a)
      • Refutation
        • P(c);XS(E)
  • Actual
    • S(G);
    • Vars
      • K(b);S_FLIGHT::QAB(A)
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(A)
      • K(b);S_FLIGHT,XS(G)::QAB(A)
      • P(c);SBLOCK,XS(E)::QAB(A)
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