MESON Chess Problem Database

Problem Display
PID: 165114 (1Q2n3/1N5p/r1b5/r3B1p1/p3k1P1/3R1Npn/2KP2q1/8 w - - 0 1)

Muller, Dieter

Novi Temi, 1981

1Q2n3/1N5p/r1b5/r3B1p1/p3k1P1/3R1Npn/2KP2q1/8

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Rd4#
    • 1...Qxd2+
      • 2.Sxd2#
    • 1...Rc5+
      • 2.Sxc5#
    • 1...Rd5
      • 2.Re3#
    • 1...Rxe5
      • 2.Qxe5#
    • 1...Bb5
      • 2.Sc5#
    • 1...Bd5
      • 2.Re3#
    • 1...Sg1
      • 2.Sxg5#
    • 1...Sf2
      • 2.Sxg5#
    • 1...Sf4
      • 2.Sxg5#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sc7
      • 2.Sd6#
    • 1...Sg7
      • 2.Sd6#
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxh7#
      • 1...Qxd2+
        • 2.Sxd2#
      • 1...Rc5+
        • 2.Sxc5#
      • 1...Qxf3
        • 2.Rd4#
      • 1...Rxe5
        • 2.Qxe5#
      • 1...Bxb7
        • 2.Qc4#
      • 1...Sxc7
        • 2.Sd6#
      • 1...Bb5
        • 2.Sc5#
      • 1...Bd5
        • 2.Re3#
      • 1...Bd7
        • 2.Qc4#
      • 1...Sf4
        • 2.Sxg5#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sg7
        • 2.Sd6#
      • 1...h5
        • 2.Qh7#
      • 1...h6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_PINP(B),SBLOCK,XS(D)::R1(C)
    • Q(a);CHECK,XP(B)::S(D),XQ(a)
    • R(f);CHECK,N_GUARD::S(G),XR(f)
    • R(f);SBLOCK::R1(C)
    • R(f);OGATE,XB(F)::QAR1(H),XR(f)
    • B(i);S_CUTR(f)::S(G)
    • B(i);SBLOCK::R1(C)
    • S(c);N_GUARD::S(D),XP(g)
    • S(c);N_GUARD,N_PINP(B)::S(D),XP(g)
    • S(k);N_GUARD::S(G),XS(k)
    • S(k);N_GUARD::S(G)
  • Actual
    • Q(H);
    • Threat
      • QAB(H),XP(j)
    • Vars
      • Q(a);CHECK,XP(B)::S(D),XQ(a)
      • R(f);CHECK,N_GUARD::S(G),XR(f)
      • Q(a);N_PINP(B),SBLOCK,XS(D)::R1(C)
      • R(f);OGATE,XB(F)::QAR1(H),XR(f)
      • B(i);OGATE,XS(G)::QAR2(H)
      • S(k);N_GUARD,XQ(H)::S(G)
      • B(i);S_CUTR(f)::S(G)
      • B(i);SBLOCK::R1(C)
      • B(i);OGATE::QAR2(H)
      • S(c);N_GUARD::S(D),XP(g)
      • S(k);N_GUARD::S(G),XS(k)
      • S(k);N_GUARD::S(G)
      • P(j);::QAB(H)
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