MESON Chess Problem Database

Problem Display
PID: 28295 (4NRbk/8/1p4P1/1PpR1p2/2Q4P/p7/K7/1n6 w - - 0 1)

Andrade, Barry Jack da Costa

Source?, 0000

4NRbk/8/1p4P1/1PpR1p2/2Q4P/p7/K7/1n6

#2

8 + 7

3242 BCPS Rapid Solving (Cheltenham) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qc3#
    • 1...Sc3+
      • 2.Qxc3#
    • 1...f4
      • 2.Rh5#
  • Tries
    • 1.Ka1?
      • 1...Sd2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...f4
        • 2.Rh5#
      • 1...a2!
    • 1.Qb3?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qc3#
      • 1...f4
        • 2.Rh5#
      • 1...c4!
    • 1.Qc1?
      • threat
        • 2.Qh6#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qa1#
        • 2.Qc3#
      • 1...f4!
    • 1.Qc2?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...f4
        • 2.g7#
      • 1...Sd2
        • 2.Qc3#
      • 1...c4!
    • 1.Qxc5?
      • threat
        • 2.Qd4#
      • 1...Sc3+
        • 2.Qxc3#
      • 1...bxc5!
    • 1.h5?
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qc3#
      • 1...f4!
  • Keys
    • 1.Qd3!
      • 1...Sc3+
        • 2.Qxc3#
      • 1...Sd2
        • 2.Qc3#
      • 1...c4
        • 2.Qd4#
      • 1...f4
        • 2.g7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(B)
    • S(a);CHECK,N_GUARD::QAB(B),XS(a)
    • P(d);OGATE::R(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB(B)
        • S(a);N_GUARD::QAB(B),XS(a)
        • P(d);OGATE::R(E)
      • Refutation
        • P(b);
    • Try
      • Q(B);
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
        • S(a);N_GUARD::QAB(B)
        • P(d);OGATE::R(E)
      • Refutation
        • P(c);
    • Try
      • Q(B);P_SPINR(E)
      • Threat
        • QAR2(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
      • Refutation
        • P(d);
    • Try
      • Q(B);P_SPINR(E)
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
        • P(d);::P(F)
        • S(a);N_GUARD::QAB(B)
      • Refutation
        • P(c);N_PINR(E)
    • Try
      • Q(B);P_SPINR(E),XP(c)
      • Threat
        • QAB(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
      • Refutation
        • P(e);XQ(B)
    • Try
      • P(C);
      • Vars
        • S(a);CHECK,N_GUARD::QAB(B),XS(a)
        • S(a);N_GUARD::QAB(B)
      • Refutation
        • P(d);
  • Actual
    • Q(B);P_SPINR(E)
    • Vars
      • S(a);CHECK,N_GUARD::QAB(B),XS(a)
      • S(a);N_GUARD::QAB(B)
      • P(c);N_GUARD,N_PINR(E)::QAB(B)
      • P(d);::P(F)
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