MESON Chess Problem Database

Problem Display
PID: 249055 (q2Br2n/nb1B3R/4P3/4rkpK/6R1/4p3/8/Q7 w - - 0 1)

de Blasio, Francis JC

Christian Science Monitor, 1952

(First published on Sat Dec 27 1952)

q2Br2n/nb1B3R/4P3/4rkpK/6R1/4p3/8/Q7

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qf6#
    • 1...Ra5
      • 2.Qf6#
      • 2.e7#
    • 1...Rb5
      • 2.Qf6#
      • 2.e7#
    • 1...Rc5
      • 2.Qf6#
      • 2.e7#
    • 1...Rd5
      • 2.Qf6#
    • 1...R5xe6
      • 2.Qf6#
    • 1...Sc6
      • 2.Qf1#
    • 1...Sg6
      • 2.Rf7#
    • 1...Sf7
      • 2.Rxf7#
  • Tries
    • 1.Bxg5?
      • threat
        • 2.Rf4#
      • 1...Re4
        • 2.Qf6#
      • 1...Sg6
        • 2.Rf7#
      • 1...Bf3!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Qxe5#
      • 1...Kf6
        • 2.Qxe5#
      • 1...R5xe6
        • 2.Qe5#
      • 1...Re4
        • 2.Rxg5#
      • 1...Ra5
        • 2.e7#
      • 1...Rb5
        • 2.e7#
      • 1...Rc5
        • 2.e7#
      • 1...Rd5
        • 2.Qf1#
      • 1...Sc6
        • 2.Qf1#
      • 1...Sg6
        • 2.Rf7#
      • 1...Sf7
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE::QAR1(A)
    • R(b);OGATE,P_SPINR(b),XP(D)::QAR1(A)
    • S(e);S_CUTB(f)::QAR(A)
    • S(i);N_GUARD::R(F)
    • S(i);N_GUARD::R(F),XS(i)
  • Tries
    • Try
      • B(G);XP(d)
      • Threat
        • R1(B)
      • Vars
        • R(b);OGATE::QAR1(A)
        • S(i);N_GUARD::R(F)
      • Refutation
        • B(f);P_PINR(B)
  • Actual
    • B(G);
    • Threat
      • QAR1(A),XR(b)
    • Vars
      • K(c);P-FLIGHT,P_SPINR(b)::QAB1(A),XR(b)
      • R(b);P_SPINR(b),XP(D)::QAR1(A)
      • R(b);SBLOCK::R1(B),XP(d)
      • R(b);N_GUARD::B(E)+P(D)
      • R(b);S_CUTB(f)::QAR(A)
      • S(e);S_CUTB(f)::QAR(A)
      • S(i);N_GUARD::R(F)
      • S(i);N_GUARD::R(F),XS(i)
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