MESON Chess Problem Database

Problem Display
PID: 109856 (r6r/5q1p/3R4/1N1PkPp1/2Pp1pP1/1p1Kp3/8/4QN2 w - - 0 1)

Belliboni, Caetano

Introducao ao Problema Ortodoxo, 1981

r6r/5q1p/3R4/1N1PkPp1/2Pp1pP1/1p1Kp3/8/4QN2

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Re6#
    • 1...Qe6
      • 2.Rxe6#
    • 1...Qa7
      • 2.Re6#
    • 1...Qb7
      • 2.Re6#
    • 1...Qc7
      • 2.Re6#
    • 1...Qg7
      • 2.Re6#
    • 1...Qf8
      • 2.Re6#
    • 1...e2
      • 2.Qxe2#
    • 1...f3
      • 2.Qg3#
  • Keys
    • 1.Sxe3!
      • threat
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
      • 1...Qxf5+
        • 2.Sxf5#
      • 1...Qxd5
        • 2.Sxd5#
      • 1...dxe3
        • 2.Qc3#
      • 1...fxe3
        • 2.Qg3#
      • 1...Qe6
        • 2.Rxe6#
      • 1...f3
        • 2.Sg2#
        • 2.Qg3#
      • 1...Ra1
        • 2.Sd1#
      • 1...Ra2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(g);N_GUARD::R1(I)
    • Q(g);N_GUARD::R1(I),XQ(g)
    • P(b);OGATEB::QAR(A),XP(b)
    • P(d);OGATEB::QAB(A)
  • Actual
    • S(B);XP(b)
    • Threat
      • DUALS(4)
    • Vars
      • Q(g);CHECK,XP(H)::QAR(A)+S(B),XQ(g)
      • Q(g);XP(G)::QAR(A)+S(B),XQ(g)
      • P(c);OGATEB,P_SPINP(c),XS(B)::QAB(A)
      • P(d);OGATEB,P_SPINP(d),XS(B)::QAB(A)
      • Q(g);N_GUARD::R1(I),XQ(g)
      • R(i);::QAR(A)+S(B)
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