MESON Chess Problem Database

Problem Display
PID: 269478 (2Q5/8/8/4P3/3Nk1n1/3RnR2/8/1K3B2 w - - 0 1)

Camponovo, Elios

Die Tat, 1952

2Q5/8/8/4P3/3Nk1n1/3RnR2/8/1K3B2

#2

7 + 3

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qe6#
    • 1...Sd5
      • 2.Qf5#
  • Tries
    • 1.Rdxe3+?
      • 1...Kxd4
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...Sxe3!
    • 1.Rfxe3+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Se6#
        • 2.Bg2#
        • 2.Qc6#
      • 1...Sxe3!
    • 1.Qc6+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Sd5!
  • Keys
    • 1.Se2!
      • 1...Kxd3
        • 2.Qc2#
      • 1...Kxf3
        • 2.Qf5#
      • 1...Kxe5
        • 2.Qe8#
      • 1...Sxf1
        • 2.Qf5#
      • 1...Sxe5
        • 2.Rfxe3#
      • 1...Sd1
        • 2.Qf5#
      • 1...Sc2
        • 2.Qf5#
      • 1...Sg2
        • 2.Qf5#
      • 1...Sc4
        • 2.Qf5#
      • 1...Sd5
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sf2
        • 2.Rfxe3#
      • 1...Sh2
        • 2.Rfxe3#
      • 1...Sf6
        • 2.Rfxe3#
      • 1...Sh6
        • 2.Rfxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,XP(F)::QAR1(G)
    • S(a);N_GUARD,SBLOCK::QAB1(G)
  • Tries
    • Try
      • R(C);CHECK,XS(a)
      • Vars
        • K(b);P-FLIGHT,S_CUTS(c),XS(E)::QAR1(G)
        • K(b);S_CUTS(c),S_FLIGHT::QAB1(G)
      • Refutation
        • S(c);XR(C)
    • Try
      • R(D);CHECK,XS(a)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(G)
      • Refutation
        • S(c);XR(D)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(F)::QAR1(G)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(E);
    • Vars
      • K(b);OGATEB,P_SPINS(a),S_FLIGHT,XR(C)::QAB1(G)
      • K(b);P_SPINS(a),S_FLIGHT,XR(D)::QAR2(G)
      • K(b);OGATEB,P-FLIGHT,XP(F)::QAR(G)
      • S(a);N_GUARD,XB(B)::QAB1(G)
      • S(c);N_GUARD,SBLOCK,XP(F)::R1(D),XS(a)
      • S(a);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(c);N_GUARD::R1(D),XS(a)
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