MESON Chess Problem Database

Problem Display
PID: 137701 (8/7Q/2B5/8/2K5/4p3/6N1/4Bk2 w - - 0 1)

Savournin, Jacques

The Problemist Supplement, 2010

8/7Q/2B5/8/2K5/4p3/6N1/4Bk2

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Qd3#
    • 1...e2
      • 2.Qh1#
  • Tries
    • 1.Kc3?
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Kd4?
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Sf4?
      • threat
        • 2.Qh1#
      • 1...Kg1
        • 2.Qh1#
      • 1...Kxe1!
    • 1.Bd5?
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Bb7?
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Ba8?
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Qb1?
      • 1...Kg1
        • 2.Bg3#
      • 1...Ke2
        • 2.Qd3#
      • 1...e2!
    • 1.Qf5+?
      • 1...Ke2
        • 2.Qd3#
        • 2.Qf3#
      • 1...Kg1!
    • 1.Qh2?
      • 1...e2
        • 2.Qh1#
      • 1...Ke2!
    • 1.Qh3?
      • 1...Ke2
        • 2.Qf3#
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Qh5?
      • 1...e2
        • 2.Qh1#
      • 1...Kg1!
    • 1.Qf7+?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kg1!
  • Keys
    • 1.Bg3!
      • 1...Kg1
        • 2.Qb1#
      • 1...Ke2
        • 2.Qd3#
      • 1...e2
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(E)
    • P(b);SBLOCK::QAR2(E)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAR(E)+B(A)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • K(a);P-FLIGHT::QAR(E)
      • K(a);S_FLIGHT::QAB1(E)
      • P(b);SBLOCK::QAR2(E)
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