MESON Chess Problem Database

Problem Display
PID: 107702 (8/8/8/1p1N4/2R5/kppp1p1p/r4Q1K/R1nNnb2 w - - 0 1)

Battaglia, Emilio

Sinfonie Scacchistiche, 1976

8/8/8/1p1N4/2R5/kppp1p1p/r4Q1K/R1nNnb2

#2

6 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Qa7#
    • 1...Be2
      • 2.Qa7#
    • 1...Bg2
      • 2.Qa7#
    • 1...Se2
      • 2.Qa7#
    • 1...Sc2
      • 2.Qa7#
    • 1...Sg2
      • 2.Qa7#
    • 1...c2
      • 2.Qa7#
    • 1...d2
      • 2.Qa7#
  • Tries
    • 1.S5xc3?
      • threat
        • 2.Sb1#
        • 2.Sxb5#
        • 2.Qb2#
      • 1...Rxa1
        • 2.Sxb5#
        • 2.Qa7#
        • 2.Qb2#
      • 1...b2
        • 2.Qxb2#
      • 1...Be2
        • 2.Sb1#
        • 2.Sxb5#
        • 2.Qa7#
      • 1...Se2
        • 2.Sb1#
        • 2.Sxb5#
        • 2.Qa7#
      • 1...Sc2
        • 2.Sb1#
        • 2.Sxb5#
        • 2.Qa7#
      • 1...d2
        • 2.Sb1#
        • 2.Sxb5#
        • 2.Qa7#
      • 1...b4
        • 2.Qb2#
      • 1...bxc4!
    • 1.Rxa2+?
      • 1...Sxa2
        • 2.Qa7#
      • 1...bxa2!
    • 1.Rc6?
      • threat
        • 2.Ra6#
      • 1...Ka4
        • 2.Ra6#
      • 1...b2!
    • 1.Rc7?
      • threat
        • 2.Ra7#
      • 1...Ka4
        • 2.Ra7#
      • 1...b2!
    • 1.Rc8?
      • threat
        • 2.Ra8#
      • 1...Ka4
        • 2.Ra8#
      • 1...b2!
  • Keys
    • 1.Rb4!
      • 1...Rxa1
        • 2.Qa7#
      • 1...Be2
        • 2.Qa7#
      • 1...Bg2
        • 2.Qa7#
      • 1...Se2
        • 2.Qa7#
      • 1...Sc2
        • 2.Qa7#
      • 1...Sg2
        • 2.Qa7#
      • 1...b2
        • 2.Qa7#
      • 1...c2
        • 2.Qa7#
      • 1...d2
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(d);N_PINQ(C),N_SPINR(d),XR(A)::QAR(C)
    • B(c);N_PINQ(C)::QAR(C)
    • S(a);N_PINQ(C)::QAR(C)
    • S(b);N_PINQ(C)::QAR(C)
    • P(g);N_PINQ(C)::QAR(C)
    • P(h);N_PINQ(C)::QAR(C)
  • Tries
    • Try
      • S(F);XP(g)
      • Threat
        • DUALS(3)
      • Vars
        • P(f);N_PINQ(C)::QAB1(C),XP(f)
        • P(k);::QAB1(C)
      • Refutation
        • P(k);XR(E)
    • Try
      • R(A);CHECK,N_SPINQ(C),XR(d)
      • Vars
        • S(a);SBLOCK,XR(A)::QAR(C)
      • Refutation
        • P(f);XR(A)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • K(e);P-FLIGHT::R(E)
      • Refutation
        • P(f);N_PINQ(C)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • K(e);P-FLIGHT::R(E)
      • Refutation
        • P(f);N_PINQ(C)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • K(e);P-FLIGHT::R(E)
      • Refutation
        • P(f);N_PINQ(C)
  • Actual
    • R(E);
    • Vars
      • R(d);N_PINQ(C),N_SPINR(d),XR(A)::QAR(C)
      • B(c);N_PINQ(C)::QAR(C)
      • S(a);N_PINQ(C)::QAR(C)
      • S(b);N_PINQ(C)::QAR(C)
      • P(f);N_PINQ(C)::QAR(C)
      • P(g);N_PINQ(C)::QAR(C)
      • P(h);N_PINQ(C)::QAR(C)
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