MESON Chess Problem Database

Problem Display
PID: 110113 (3B1N1R/2ppK3/5pN1/3Qp1k1/5R1p/r7/b2nrp2/3q4 w - - 0 1)

Kratschmer, Ralf

Rizzetti MT, 1985

3B1N1R/2ppK3/5pN1/3Qp1k1/5R1p/r7/b2nrp2/3q4

#2

7 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Qg2#
    • 1...Ra5
      • 2.Qg2#
    • 1...Ra6
      • 2.Qg2#
    • 1...Ra7
      • 2.Qg2#
    • 1...Ra8
      • 2.Qg2#
    • 1...Bb3
      • 2.Qg2#
    • 1...Sb3
      • 2.Qg2#
    • 1...f5
      • 2.Kxd7#
      • 2.Kf7#
      • 2.Ke8#
  • Tries
    • 1.Se6+?
      • 1...Kxg6
        • 2.Rxf6#
      • 1...dxe6!
    • 1.Qxe5+?
      • 1...fxe5
        • 2.Kxd7#
        • 2.Ke8#
      • 1...f5
        • 2.Kxd7#
        • 2.Ke8#
      • 1...Rxe5+!
  • Keys
    • 1.Ke8!
      • threat
        • 2.Bxf6#
      • 1...Ra6
        • 2.Qg2#
      • 1...Ra8
        • 2.Qg2#
      • 1...Se4
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(f);N_GUARD::QAR(B)
    • B(b);S_CUTR(f)::QAR(B)
    • S(c);S_CUTR(f)::QAR(B)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINP(h),P-FLIGHT,XS(C)::R1(A),XP(j)
      • Refutation
        • P(l);XS(F)
    • Try
      • Q(B);CHECK,P_SPINQ(B),XP(h)
      • Refutation
        • R(d);CHECK,XQ(B)
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • B(E),XP(j)
    • Vars
      • R(f);N_GUARD::QAR(B)
      • R(f);N_GUARD,P_PINB(E)::QAR(B)
      • S(c);S_CUTR(d)::QAR2(B),XP(h)
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Developed and maintained by Brian Stephenson.
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