MESON Chess Problem Database

Problem Display
PID: 265287 (5Q2/2nK2P1/R2p3p/1Np5/2P5/2p1kB2/1N1q1pP1/2B1b3 w - - 0 1)

Brogi, Giuseppe

Problemnoter, 1960

5Q2/2nK2P1/R2p3p/1Np5/2P5/2p1kB2/1N1q1pP1/2B1b3

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...cxb2
      • 2.Ra3#
    • 1...c2
      • 2.Ra3#
  • Tries
    • 1.Rxd6?
      • threat
        • 2.Sd1#
        • 2.Rd3#
      • 1...Qxc1
        • 2.Rd3#
      • 1...f1Q
        • 2.Sd1#
      • 1...f1S
        • 2.Sd1#
      • 1...f1B
        • 2.Sd1#
      • 1...f1R
        • 2.Sd1#
      • 1...Sd5
        • 2.Re6#
      • 1...c2
        • 2.Rd3#
      • 1...cxb2!
    • 1.Qf5?
      • threat
        • 2.Sd1#
        • 2.Qe4#
      • 1...Sxb5
        • 2.Qe4#
      • 1...cxb2
        • 2.Ra3#
        • 2.Qe4#
      • 1...f1Q
        • 2.Sd1#
      • 1...f1S
        • 2.Sd1#
      • 1...f1B
        • 2.Sd1#
      • 1...f1R
        • 2.Sd1#
      • 1...c2
        • 2.Ra3#
        • 2.Qe4#
      • 1...d5
        • 2.Sd1#
        • 2.Qe5#
      • 1...Qxc1!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Sd1#
      • 1...Qxc1
        • 2.Qxh6#
      • 1...cxb2
        • 2.Ra3#
      • 1...Sd5
        • 2.Qe5#
      • 1...c2
        • 2.Ra3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB,XS(B)::R(G)
    • P(d);OGATEB::R(G)
  • Tries
    • Try
      • R(G);P_SPINR(G),XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);N_PINR(G),N_SPINQ(b),XB(A)::R1(G)
        • P(c);::S(B)
        • S(i);N_PINR(G)::R(G)
        • P(d);::R1(G)
      • Refutation
        • P(d);XS(B)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);XS(F)::QAR1(J)
        • P(c);::S(B)
      • Refutation
        • Q(b);N_SPINQ(b),XB(A)
  • Actual
    • Q(J);P_SPINQ(J),XP(g)
    • Threat
      • S(B)
    • Vars
      • Q(b);N_PINQ(J),N_SPINQ(b),XB(A)::QAB(J),XP(h)
      • P(d);OGATEB,XS(B)::R(G)
      • S(i);N_PINQ(J)::QAR2(J)
      • P(d);OGATEB::R(G)
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