MESON Chess Problem Database

Problem Display
PID: 203736 (b3Qn2/q7/P2p4/N2kb3/2pP1PB1/5P2/2RpN1K1/8 w - - 0 1)

Bonivento, Oscar

Scacco!, 1999

b3Qn2/q7/P2p4/N2kb3/2pP1PB1/5P2/2RpN1K1/8

#2

10 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe7
      • 2.Qb5#
    • 1...Qf7
      • 2.Qb5#
    • 1...Qg7
      • 2.Qb5#
    • 1...Qh7
      • 2.Qb5#
    • 1...Bxf4
      • 2.Qe4#
    • 1...Bf6
      • 2.Qe4#
    • 1...Bg7
      • 2.Qe4#
    • 1...Bh8
      • 2.Qe4#
    • 1...Bc6
      • 2.Qxc6#
    • 1...Se6
      • 2.Bxe6#
      • 2.Qxe6#
    • 1...Sg6
      • 2.Be6#
      • 2.Qe6#
    • 1...Sd7
      • 2.Be6#
      • 2.Qf7#
      • 2.Qe6#
      • 2.Qg8#
    • 1...Sh7
      • 2.Be6#
      • 2.Qe6#
  • Tries
    • 1.Rxc4?
      • threat
        • 2.Sc3#
      • 1...Qxd4
        • 2.Qxa8#
      • 1...Bxd4
        • 2.Qe4#
      • 1...d1S!
    • 1.Qf7+?
      • 1...Se6
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...Qxf7!
    • 1.Qxa8+?
      • 1...Qb7
        • 2.Qxb7#
      • 1...Qxa8!
  • Keys
    • 1.Rxd2!
      • threat
        • 2.Sc3#
      • 1...Qxd4
        • 2.Qb5#
      • 1...Bxd4
        • 2.Qh5#
      • 1...c3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::QAR2(J)
    • Q(f);N_GUARD,P_PINB(G)::QAR2(J)
    • B(d);OGATE,XP(F)::QAB1(J)
    • B(d);OGATE::QAB1(J)
    • B(g);N_GUARD::QAB1(J),XB(g)
  • Tries
    • Try
      • R(A);XP(b)
      • Threat
        • S(B)
      • Vars
        • Q(f);N_GUARD,XP(E)::QAB(J),XB(g)
        • B(d);OGATE,XP(E)::QAB1(J)
      • Refutation
        • P(a);
    • Try
      • Q(J);CHECK
      • Refutation
        • Q(f);XQ(J)
    • Try
      • Q(J);CHECK,XB(g)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAB(J),XQ(f)
      • Refutation
        • Q(f);XQ(J)
  • Actual
    • R(A);XP(a)
    • Threat
      • S(B)
    • Vars
      • Q(f);N_GUARD,P_SPINQ(f),XP(E)::QAR2(J)
      • B(d);OGATEB,P_SPINB(d),XP(E)::QAR(J)
      • P(b);::S(B),XP(b)
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