MESON Chess Problem Database

Problem Display
PID: 80863 (7B/2rPpK2/P1Pp2P1/P2kPB1R/pQ1P2p1/8/2P5/8 w - - 0 1)

Guida, Marco

1st Prize, diagrammes, 2005

7B/2rPpK2/P1Pp2P1/P2kPB1R/pQ1P2p1/8/2P5/8

#2

13 + 6

4901 Best Problems 2007
145 StrateGems 2008
23 Die Schwalbe 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qc4#
    • 1...dxe5
      • 2.Qc5#
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Bf3#
      • 1...Kxc6
        • 2.Qc4#
      • 1...Ke4!
    • 1.Be6+?
      • 1...Kxc6
        • 2.Qxa4#
        • 2.Qc4#
        • 2.Qb6#
        • 2.d5#
        • 2.d8S#
      • 1...Ke4!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Qc5#
      • 1...exd6!
    • 1.c4+?
      • 1...Kxc6
        • 2.Qxa4#
        • 2.Qb5#
        • 2.Qb6#
        • 2.d5#
        • 2.d8S#
      • 1...Kxd4!
    • 1.exd6?
      • threat
        • 2.Qc5#
      • 1...Kxc6
        • 2.Qc5#
      • 1...exd6
        • 2.Qb5#
      • 1...Rxc6!
    • 1.e6?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qc4#
      • 1...Rxc6
        • 2.Bd3#
      • 1...Rb7!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qc4#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Rxc6
        • 2.e6#
      • 1...dxe5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XP(I)::QAR2(B)
    • P(d);N_GUARD,XP(E)::QAR1(B)
  • Tries
    • Try
      • B(F);XP(b)
      • Threat
        • B(F)
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR2(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT::QAR1(B)
      • Refutation
        • P(f);P_PINP(K),XQ(B)
    • Try
      • P(A);CHECK
      • Refutation
        • K(c);P-FLIGHT,XP(C)
    • Try
      • P(E);XP(d)
      • Threat
        • QAR1(B)
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR1(B)
        • P(f);P_PINP(K),SBLOCK,XP(E)::QAR2(B)
      • Refutation
        • R(e);XP(I)
    • Try
      • P(E);
      • Threat
        • QAR2(B)
      • Vars
        • K(c);S_FLIGHT,XP(I)::QAR2(B)
        • R(e);SBLOCK,XP(I)::R(G)+B(F)
      • Refutation
        • R(e);
  • Actual
    • B(F);
    • Threat
      • QAB1(B)
    • Vars
      • K(c);S_FLIGHT,XP(I)::QAB1(B)
      • R(e);SBLOCK,XP(I)::R(G)+P(E)
      • P(d);N_GUARD,P_SPINP(d),XP(E)::QAR1(B)
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