MESON Chess Problem Database

Problem Display
PID: 22713 (4Q3/2p2KB1/NR1pN1p1/pp1k4/r3pR2/3q4/8/2r2B2 w - - 0 1)

Casa, Alex

2nd Prize, Phenix, 1995

4Q3/2p2KB1/NR1pN1p1/pp1k4/r3pR2/3q4/8/2r2B2

#2

8 + 10

5418 FIDE Album (1995-1997) (Annexe) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxb5#
    • 1...Rca1
      • 2.Qc6#
    • 1...Rb1
      • 2.Qc6#
    • 1...Rd1
      • 2.Qc6#
    • 1...Re1
      • 2.Qc6#
    • 1...Rxf1
      • 2.Qc6#
    • 1...Rc6
      • 2.Qxc6#
  • Tries
    • 1.Saxc7+?
      • 1...Kc4
        • 2.Qxb5#
      • 1...Rxc7+!
    • 1.Sec5?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qxe4#
      • 1...Qh3
        • 2.Qc6#
      • 1...cxb6!
    • 1.Sexc7+?
      • 1...Kc4
        • 2.Qxb5#
      • 1...Rxc7+!
    • 1.Sd8?
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qxb5#
      • 1...Qh3!
    • 1.Rf5+?
      • 1...Kc4
        • 2.Qxb5#
      • 1...gxf5!
    • 1.Qxb5+?
      • 1...Rc5
        • 2.Saxc7#
        • 2.Sexc7#
      • 1...c5
        • 2.Sac7#
        • 2.Sec7#
      • 1...Qxb5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qe6#
      • 1...Kc4
        • 2.Qc6#
      • 1...Qh3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • K(g);P_SPINP(d),P_SPINQ(b),S_FLIGHT::QAB1(H),XP(f)
    • R(a);N_GUARD::QAB1(H)
    • R(a);N_GUARD,P_PINR(B),XB(A)::QAB1(H)
    • R(a);N_GUARD::QAB1(H),XR(a)
  • Tries
    • Try
      • S(C);CHECK,XP(j)
      • Vars
        • K(g);P_SPINP(d),P_SPINQ(b),S_FLIGHT::QAB1(H),XP(f)
      • Refutation
        • R(a);CHECK,XS(C)
    • Try
      • S(E);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);P_SPINP(d),P_SPINQ(b),S_FLIGHT::QAR2(H),XP(d)
        • Q(b);::QAB1(H)
      • Refutation
        • P(j);XR(D)
    • Try
      • S(E);CHECK,XP(j)
      • Vars
        • K(g);P_SPINP(d),P_SPINQ(b),S_FLIGHT::QAB1(H),XP(f)
      • Refutation
        • R(a);CHECK,XS(E)
    • Try
      • S(E);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);P_SPINP(d),P_SPINQ(b),S_FLIGHT::QAB1(H),XP(f)
      • Refutation
        • Q(b);
    • Try
      • R(B);CHECK
      • Vars
        • K(g);P_SPINQ(b),S_FLIGHT::QAB1(H),XP(f)
      • Refutation
        • P(i);XR(B)
    • Try
      • Q(H);CHECK,XP(f)
      • Refutation
        • Q(b);XQ(H)
  • Actual
    • S(E);
    • Threat
      • QAB1(H)
    • Vars
      • K(g);P_SPINQ(b),S_FLIGHT::QAR2(H)
      • Q(b);N_GUARD::QAB1(H),XP(d)
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