MESON Chess Problem Database

Problem Display
PID: 193609 (4Q3/4R1K1/7r/1N2B3/2P1k1n1/3b3R/q5rp/5N1B w - - 0 1)

Janet, Frank

Pittsburgh Gazette-Times, 1915

4Q3/4R1K1/7r/1N2B3/2P1k1n1/3b3R/q5rp/5N1B

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Sd6#
      • 2.Qg6#
    • 1...Rh5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Rg6+
      • 2.Qxg6#
    • 1...Rh8
      • 2.Sd6#
      • 2.Qg6#
  • Keys
    • 1.Qh5!
      • threat
        • 2.Sc3#
        • 2.Qxg4#
      • 1...Rg6+
        • 2.Qxg6#
      • 1...Rh7+
        • 2.Qxh7#
      • 1...Sf2+
        • 2.Bxg2#
      • 1...Se3+
        • 2.Sg3#
      • 1...Sxe5+
        • 2.Qg4#
      • 1...Sf6+
        • 2.Bg3#
      • 1...Qxc4
        • 2.Bxg2#
      • 1...Rxh5
        • 2.Sd6#
      • 1...Bxc4
        • 2.Sc3#
      • 1...Qb3
        • 2.Sd2#
        • 2.Bxg2#
        • 2.Qxg4#
      • 1...Qa1
        • 2.Sd2#
        • 2.Bxg2#
        • 2.Qxg4#
      • 1...Qb2
        • 2.Qxg4#
      • 1...Qc2
        • 2.Qxg4#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qe2
        • 2.Sc3#
      • 1...Qf2
        • 2.Sc3#
      • 1...Qa3
        • 2.Sd2#
        • 2.Bxg2#
        • 2.Qxg4#
      • 1...Qa5
        • 2.Bxg2#
        • 2.Qxg4#
      • 1...Re6
        • 2.Sc3#
      • 1...Rf6
        • 2.Sc3#
      • 1...Be2
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 1
  • Sets
    • R(g);N_GUARD::S(E)
    • R(g);N_GUARD::S(E),XR(g)
    • R(g);CHECK,N_GUARD::QAB(I),XR(g)
  • Actual
    • Q(I);
    • Threat
      • DUALS(2)
    • Vars
      • R(g);CHECK,N_GUARD::QAB(I),XR(g)
      • R(g);CHECK,OGATE::QAB(I),XR(g)
      • S(f);CHECK,S_CUTQ(a)::B(B),XR(b)
      • S(f);CHECK,SBLOCK::S(A)
      • S(f);CHECK,P_SPINS(f),XB(F)::QAR2(I)
      • S(f);CHECK,N_GUARD,S_CUTR(g)::R(G)+B(F)
      • Q(a);N_GUARD,XP(D)::B(B),XR(b)
      • R(g);N_GUARD,XQ(I)::S(E)
      • B(d);XP(D)::S(E)
      • Q(a);P_PINB(F)::QAR2(I),XS(f)
      • Q(a);::QAR2(I),XS(f)
      • Q(a);N_GUARD::S(A),XQ(a)
      • Q(a);::S(E)
      • R(g);::S(E)
      • B(d);::S(E)
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