MESON Chess Problem Database

Problem Display
PID: 287168 (8/5NQ1/8/1K1p4/3P4/3kp3/NR1p4/7B w - - 0 1)

Papadrossos, Efthymios

To Mat, 1952

8/5NQ1/8/1K1p4/3P4/3kp3/NR1p4/7B

#2

7 + 4

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Tries
    • 1.Kc5?
      • 1...d1Q
        • 2.Se5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...d1S
        • 2.Se5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...d1B
        • 2.Se5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...d1R
        • 2.Se5#
        • 2.Qg6#
        • 2.Qh7#
      • 1...e2
        • 2.Qg3#
      • 1...Ke2!
    • 1.Se5+?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Ke2!
    • 1.Qg6+?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Ke2!
    • 1.Qh7+?
      • 1...Kxd4
        • 2.Rb4#
      • 1...Ke2!
  • Keys
    • 1.Qg1!
      • 1...Ke2
        • 2.Sc1#
      • 1...Kxd4
        • 2.Rxd2#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e2
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(G)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(D)::R(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(D)::R(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,XP(D)::R(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::S(B)
      • K(b);N_GUARD,P-FLIGHT,P_SPINP(c),XP(D)::R(C),XP(a)
      • P(a);OGATEB::QAR2(G),XQ(a)
      • P(a);OGATEB::QAR2(G),XS(a)
      • P(a);OGATEB::QAR2(G),XB(a)
      • P(a);OGATEB::QAR2(G),XR(a)
      • P(c);SBLOCK::S(F)
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