MESON Chess Problem Database

Problem Display
PID: 163555 (8/7B/1Pr4b/KNp4R/2kpp3/1N6/2P4Q/3n2rb w - - 0 1)

di Scala, Pascal

Phenix, 1991

8/7B/1Pr4b/KNp4R/2kpp3/1N6/2P4Q/3n2rb

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb6
      • 2.Rxc5#
    • 1...Rd6
      • 2.Rxc5#
    • 1...Re6
      • 2.Rxc5#
    • 1...Rf6
      • 2.Rxc5#
    • 1...Rg6
      • 2.Rxc5#
    • 1...Bd2+
      • 2.Sxd2#
    • 1...Bg7
      • 2.Sd2#
    • 1...Bf8
      • 2.Sd2#
    • 1...Sc3
      • 2.Sa3#
    • 1...Se3
      • 2.Sd2#
    • 1...e3
      • 2.Bd3#
  • Tries
    • 1.Sd6+?
      • 1...Rxd6
        • 2.Rxc5#
      • 1...Kc3!
    • 1.Bg8+?
      • 1...Re6
        • 2.Bxe6#
        • 2.Rxc5#
      • 1...Rxg8!
    • 1.Qe5?
      • threat
        • 2.Qd5#
      • 1...Bd2+
        • 2.Sxd2#
      • 1...Rg5
        • 2.Sd2#
      • 1...Rd6
        • 2.Qxc5#
      • 1...Sc3
        • 2.Sa3#
      • 1...Se3
        • 2.Sd2#
      • 1...e3
        • 2.Bd3#
      • 1...Bg5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qd5#
      • 1...Bd2+
        • 2.Sxd2#
      • 1...Rxd6
        • 2.Rxc5#
      • 1...Rg5
        • 2.Sd2#
      • 1...Bg5
        • 2.Bg8#
      • 1...Sc3
        • 2.Sa3#
      • 1...Se3
        • 2.Sd2#
      • 1...e3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(h);N_GUARD,XP(G)::R1(F),XP(g)
    • R(h);N_GUARD::R1(F),XP(g)
    • B(i);CHECK,N_GUARD::S(C),XB(i)
    • B(i);N_GUARD::S(C)
    • S(a);SBLOCK::S(E)
    • S(a);S_CUTB(i)::S(C)
    • P(f);OGATE::B(H)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • R(h);XS(E)::R1(F),XP(g)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • B(H);CHECK
      • Refutation
        • R(b);XB(H)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • B(i);CHECK,N_GUARD::S(C),XB(i)
        • R(b);S_CUTB(i)::S(C)
        • R(h);N_GUARD::QAR1(B),XP(g)
        • S(a);SBLOCK::S(E)
        • S(a);S_CUTB(i)::S(C)
        • P(f);OGATE::B(H)
      • Refutation
        • B(i);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • B(i);CHECK,N_GUARD::S(C),XB(i)
      • R(h);N_GUARD,XQ(B)::R1(F),XP(g)
      • R(b);S_CUTB(i)::S(C)
      • B(i);S_CUTR(b)::B(H)
      • S(a);SBLOCK::S(E)
      • S(a);S_CUTB(i)::S(C)
      • P(f);OGATE::B(H)
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