MESON Chess Problem Database

Problem Display
PID: 171443 (8/8/6p1/6pB/7k/8/5K1p/5Q2 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

8/8/6p1/6pB/7k/8/5K1p/5Q2

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh5
      • 2.Qh3#
    • 1...h1Q
      • 2.Qxh1#
    • 1...h1S+
      • 2.Qxh1#
    • 1...h1B
      • 2.Qxh1#
    • 1...h1R
      • 2.Qxh1#
  • Tries
    • 1.Bd1?
      • 1...h1S+
        • 2.Qxh1#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#
      • 1...g4!
    • 1.Be2?
      • 1...h1S+
        • 2.Qxh1#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#
      • 1...g4!
    • 1.Bf3?
      • 1...h1S+
        • 2.Qxh1#
      • 1...h1Q
        • 2.Qxh1#
      • 1...h1B
        • 2.Qxh1#
      • 1...h1R
        • 2.Qxh1#
      • 1...g4!
    • 1.Qc4+?
      • 1...Kh3
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Kxh5!
    • 1.Qd1?
      • threat
        • 2.Qg4#
      • 1...h1S+
        • 2.Qxh1#
      • 1...Kh3
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...gxh5!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qxh2#
        • 2.Qg4#
      • 1...h1S+
        • 2.Qxh1#
      • 1...Kxh5
        • 2.Qh3#
      • 1...gxh5
        • 2.Qg3#
      • 1...g4
        • 2.Qxg4#
      • 1...h1Q
        • 2.Qxh1#
        • 2.Qg4#
      • 1...h1B
        • 2.Qxh1#
        • 2.Qh2#
        • 2.Qg4#
      • 1...h1R
        • 2.Qxh1#
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(b);P-FLIGHT,XB(C)::QAR2(A)
    • P(a);OGATEB::QAR(A),XQ(a)
    • P(a);CHECK,OGATEB::QAR(A),XS(a)
    • P(a);OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
  • Tries
    • Try
      • B(C);
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • B(C);
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
        • P(c);P_SPINP(c)::QAR1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XS(a)
        • K(b);P-FLIGHT::QAB1(A)
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • P(d);XB(C)
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK,OGATEB::QAR(A),XS(a)
      • K(b);P-FLIGHT,XB(C)::QAR2(A)
      • P(d);SBLOCK,XB(C)::QAB1(A)
      • P(c);::QAR1(A),XP(c)
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