MESON Chess Problem Database

Problem Display
PID: 118376 (B1R4B/b7/p1Q1p1b1/3r3p/1PR2p1K/2Pk2p1/3ppP2/N4N2 w - - 0 1)

Rizzetti, Dante Hugo

Boletim da UBP, 1962

B1R4B/b7/p1Q1p1b1/3r3p/1PR2p1K/2Pk2p1/3ppP2/N4N2

#2

11 + 11

6490 yacpdb 2009
16325 Seleccion de Problemas de Dante Hugo Rizzetti (Kapros) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qf3#
    • 1...Rf5
      • 2.Qe4#
  • Tries
    • 1.Rd4+?
      • 1...Rxd4
        • 2.Qf3#
      • 1...Bxd4!
    • 1.Qxd5+?
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...exd5!
    • 1.Qxa6?
      • threat
        • 2.Rd4#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rc5
        • 2.R4xc5#
      • 1...Bc5
        • 2.Rxf4#
      • 1...Rb5!
  • Keys
    • 1.Rxf4!
      • threat
        • 2.Qc4#
      • 1...Rd4
        • 2.Qf3#
      • 1...Rc5
        • 2.Qf3#
      • 1...Bc5
        • 2.Qxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(f);OGATE::QAR2(H)
    • R(f);OGATE::QAB1(H)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • R(f);OGATE,XR(F)::QAR2(H)
      • Refutation
        • B(k);XR(F)
    • Try
      • Q(H);CHECK,XR(f)
      • Refutation
        • P(i);XQ(H)
    • Try
      • Q(H);XP(h)
      • Threat
        • QAB(H)+R(F),DCHECK
      • Vars
        • B(k);::QAB(H)+R(F),DCHECK,XB(k)
        • R(f);::QAB(H)+R(F),DCHECK,XR(f)
        • R(f);::QAB(H)+R(F),XR(f)
        • B(k);S_CUTR(f)::QAB(H)+R(F),XP(e)
      • Refutation
        • R(f);
  • Actual
    • R(F);XP(e)
    • Threat
      • QAB1(H)
    • Vars
      • R(f);OGATE,P_PINR(F)::QAR2(H)
      • R(f);OGATE::QAR2(H)
      • B(k);S_CUTR(f)::QAB(H),XP(h)
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