MESON Chess Problem Database

Problem Display
PID: 223601 (2B5/P7/p6Q/KpPPPP2/2kNp3/B1PRP3/NR5P/8 w - b5 0 1)

Fasano, Alessandro

Best Problems, 2020

2B5/P7/p6Q/KpPPPP2/2kNp3/B1PRP3/NR5P/8

#2

16 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qe6#
  • Tries
    • 1.Sb4?
      • 1...Kxc5
        • 2.Qc6#
      • 1...exd3!
    • 1.Bxa6?
      • 1...Kxd3
        • 2.Bxb5#
      • 1...Kxd5
        • 2.Qe6#
      • 1...exd3!
    • 1.Rb4+?
      • 1...Kxc5
        • 2.Sb3#
        • 2.Se6#
        • 2.Qc6#
        • 2.Qd6#
      • 1...Kxd5
        • 2.Qd6#
      • 1...Kxd3!
    • 1.Rd1?
      • 1...Kxd5
        • 2.Qe6#
      • 1...b4!
    • 1.Rdd2?
      • 1...Kxd5
        • 2.Qe6#
      • 1...b4!
    • 1.Qc6?
      • 1...exd3
        • 2.Rb4#
      • 1...b4
        • 2.Bxa6#
      • 1...Kxd3!
    • 1.Qd6?
      • 1...exd3
        • 2.Rb4#
      • 1...b4
        • 2.Bxa6#
      • 1...Kxd3!
  • Keys
    • 1.cxb5 ep!
      • 1...Kxd3
        • 2.Bxa6#
      • 1...Kxd5
        • 2.Qe6#
      • 1...exd3
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(K)::QAB1(N)
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(J)::QAR1(N)
      • Refutation
        • P(b);XR(F)
    • Try
      • B(P);P_PINP(c),XP(d)
      • Vars
        • K(a);S_FLIGHT,XR(F)::B(P),XP(c)
        • K(a);N_SPINP(c),OGATEB,S_FLIGHT,XP(K)::QAB1(N)
      • Refutation
        • P(b);XR(F)
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(K)::QAR1(N)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • R(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(K)::QAB1(N)
      • Refutation
        • P(c);
    • Try
      • R(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(K)::QAB1(N)
      • Refutation
        • P(c);
    • Try
      • Q(N);
      • Vars
        • P(b);SBLOCK,XR(F)::R1(B)
        • P(c);OGATEB::B(P),XP(d)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
    • Try
      • Q(N);
      • Vars
        • P(b);SBLOCK,XR(F)::R1(B)
        • P(c);OGATEB::B(P),XP(d)
      • Refutation
        • K(a);S_FLIGHT,XR(F)
  • Actual
    • P(J);EP,XP(c)
    • Vars
      • K(a);S_FLIGHT,XR(F)::B(P),XP(d)
      • K(a);OGATEB,S_FLIGHT,XP(K)::QAB1(N)
      • P(b);SBLOCK,XR(F)::QAR2(N)
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