MESON Chess Problem Database

Problem Display
PID: 100881 (8/8/6p1/6P1/4p3/1pQ1K3/2p2P2/1rk5 w - - 0 1)

Corrias, Antonio G

Good Companions, 1918

8/8/6p1/6P1/4p3/1pQ1K3/2p2P2/1rk5

#2

4 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.Qd2#
    • 1...Ra1
      • 2.Qxa1#
    • 1...Rb2
      • 2.Qe1#
    • 1...b2
      • 2.Qe1#
      • 2.Qd2#
  • Tries
    • 1.Ke2?
      • 1...Ra1
        • 2.Qxa1#
      • 1...Rb2
        • 2.Qe1#
      • 1...b2
        • 2.Qe1#
        • 2.Qd2#
        • 2.Qe3#
      • 1...e3!
    • 1.Qd4?
      • 1...Ra1
        • 2.Qxa1#
      • 1...b2
        • 2.Qd2#
      • 1...Rb2!
    • 1.Qa5?
      • 1...Kd1
        • 2.Qd2#
      • 1...Ra1
        • 2.Qxa1#
      • 1...Rb2
        • 2.Qe1#
      • 1...b2
        • 2.Qe1#
        • 2.Qd2#
      • 1...Kb2!
    • 1.f3?
      • 1...Kd1
        • 2.Qd2#
      • 1...Ra1
        • 2.Qxa1#
      • 1...Rb2
        • 2.Qe1#
      • 1...b2
        • 2.Qe1#
        • 2.Qd2#
      • 1...exf3!
    • 1.f4?
      • 1...Kd1
        • 2.Qd2#
      • 1...Ra1
        • 2.Qxa1#
      • 1...Rb2
        • 2.Qe1#
      • 1...b2
        • 2.Qe1#
        • 2.Qd2#
      • 1...exf4 ep!
  • Keys
    • 1.Qh8!
      • 1...Kd1
        • 2.Qh1#
      • 1...Ra1
        • 2.Qxa1#
      • 1...Rb2
        • 2.Qh1#
      • 1...b2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
    • R(a);OGATEB::QAR2(B),XR(a)
    • R(a);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • R(a);OGATEB::QAR2(B),XR(a)
        • R(a);SBLOCK::QAR2(B)
      • Refutation
        • P(e);
    • Try
      • Q(B);N_PINP(c)
      • Vars
        • R(a);OGATEB::QAR2(B),XR(a)
        • P(d);SBLOCK::QAB1(B)
      • Refutation
        • R(a);
    • Try
      • Q(B);N_PINP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • R(a);OGATEB::QAR2(B),XR(a)
        • R(a);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(A);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
        • R(a);OGATEB::QAR2(B),XR(a)
        • R(a);SBLOCK::QAR2(B)
      • Refutation
        • P(e);XP(A)
    • Try
      • P(A);
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR1(B)
        • R(a);OGATEB::QAR2(B),XR(a)
        • R(a);SBLOCK::QAR2(B)
      • Refutation
        • P(e);EP,XP(A)
  • Actual
    • Q(B);N_PINP(c)
    • Vars
      • K(b);P-FLIGHT::QAR(B)
      • R(a);OGATEB::QAR2(B),XR(a)
      • R(a);SBLOCK::QAR(B)
      • P(d);SBLOCK::QAR(B)
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