MESON Chess Problem Database

Problem Display
PID: 57328 (b7/n2QB3/r3P1p1/p2N1kPp/r7/p2qR1PP/1nB5/7K w - - 0 1)

Muller, WC Jr

1st HM., Brisbane Courier, 1919

b7/n2QB3/r3P1p1/p2N1kPp/r7/p2qR1PP/1nB5/7K

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.Qxe6#
    • 1...Bxd5+
      • 2.Qxd5#
    • 1...Sc4
      • 2.Bxd3#
  • Tries
    • 1.Qxa4?
      • threat
        • 2.Qf4#
      • 1...Qe4+
        • 2.Qxe4#
      • 1...Sxa4
        • 2.Bxd3#
      • 1...Sc4
        • 2.Bxd3#
      • 1...Bxd5+!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Re5#
      • 1...Qe4+
        • 2.Rf3#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Re4
        • 2.Se7#
      • 1...Sc4
        • 2.Bxd3#
      • 1...Sc6
        • 2.e7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(h);OGATE,P_SPINR(h),XP(H)::QAB1(I),XR(h)
    • B(k);CHECK,OGATE,XS(F)::QAR2(I),XB(k)
    • S(a);N_GUARD,S_CUTR(d)::B(B),XQ(c)
  • Tries
    • Try
      • Q(I);XR(d)
      • Threat
        • QAR1(I)
      • Vars
        • Q(c);CHECK,N_GUARD,N_PINS(F)::QAB1(I),XQ(c)
        • S(a);N_GUARD,XQ(I)::B(B),XQ(c)
        • S(a);N_GUARD::B(B),XQ(c)
      • Refutation
        • B(k);CHECK,XS(F)
  • Actual
    • B(J);
    • Threat
      • R1(C)
    • Vars
      • Q(c);CHECK,N_PINS(F),S_CUTR(d)::R(C)
      • B(k);CHECK,OGATE,XS(F)::QAR2(I),XB(k)
      • R(d);N_PINS(F),N_SPINQ(c)::S(F)
      • S(a);N_GUARD,S_CUTR(d)::B(B),XQ(c)
      • S(j);N_PINS(F),S_CUTR(h)::QAB(I)+P(H)
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Developed and maintained by Brian Stephenson.
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