MESON Chess Problem Database

Problem Display
PID: 180757 (3r1R2/6p1/1n1p1p1B/5k2/2NK1N2/Q3p1R1/4pb2/1b6 w - - 0 1)

Muller, Dieter

1st HM., Bertin MT, 1989-1991

3r1R2/6p1/1n1p1p1B/5k2/2NK1N2/Q3p1R1/4pb2/1b6

#2

7 + 10

702 Phenix 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Sxd6#
    • 1...Rb8
      • 2.Sxd6#
    • 1...Rc8
      • 2.Sxd6#
    • 1...Re8
      • 2.Sxd6#
    • 1...Rxf8
      • 2.Sxd6#
    • 1...Ba2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Be1
      • 2.Sxe3#
    • 1...Bxg3
      • 2.Sxe3#
    • 1...Sd7
      • 2.Sxd6#
  • Tries
    • 1.Qxe3?
      • threat
        • 2.Rg5#
      • 1...Bxe3+
        • 2.Sxe3#
      • 1...Rxf8
        • 2.Sxd6#
      • 1...Bxg3
        • 2.Qe6#
      • 1...g5
        • 2.Rxg5#
      • 1...gxh6!
    • 1.Qa5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...d5!
  • Keys
    • 1.Qxd6!
      • threat
        • 2.Rg5#
      • 1...Rxd6+
        • 2.Sxd6#
      • 1...Rxf8
        • 2.Qe6#
      • 1...Bxg3
        • 2.Sxe3#
      • 1...gxh6
        • 2.Rxf6#
      • 1...g5
        • 2.Rxg5#
        • 2.Rxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::S(C),XP(g)
    • R(j);N_GUARD,N_SPINP(h),XR(G)::S(C),XP(g)
    • B(a);N_GUARD::QAB(A)
    • B(a);N_GUARD::QAB(A),XB(a)
    • B(c);N_GUARD::S(C),XP(d)
    • B(c);N_GUARD,XR(B)::S(C),XP(d)
    • S(f);S_CUTR(j)::S(C),XP(g)
  • Tries
    • Try
      • Q(A);P_SPINQ(A),XP(d)
      • Threat
        • R1(B)
      • Vars
        • B(c);CHECK,XQ(A)::S(C),XB(c)
        • R(j);N_GUARD,N_SPINP(h),XR(G)::S(C),XP(g)
        • B(c);N_PINQ(A),XR(B)::QAB1(A)
        • P(i);::R1(B),XP(i)
      • Refutation
        • P(i);XB(F)
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAR2(A),XS(f)
      • Refutation
        • P(g);N_SPINP(h),P_SPINP(g)
  • Actual
    • Q(A);P_SPINQ(A),XP(g)
    • Threat
      • R1(B)
    • Vars
      • R(j);CHECK,XQ(A)::S(C),XR(j)
      • R(j);N_PINQ(A),N_SPINP(h),XR(G)::QAB1(A)
      • B(c);N_GUARD,XR(B)::S(C),XP(d)
      • P(i);N_GUARD,XB(F)::R1(G),XP(h)
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