MESON Chess Problem Database

Problem Display
PID: 172296 (8/8/8/8/4N2K/8/5pk1/2Q3Bb w - - 0 1)

Andreev, Aleksandr Grigorevich

Vecherni Krasnodar, 1996

8/8/8/8/4N2K/8/5pk1/2Q3Bb

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bxf2?
      • 1...Kh2
        • 2.Qg1#
      • 1...Kf3!
    • 1.Qb2?
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...Kxg1
        • 2.Qxf2#
      • 1...Kf3!
    • 1.Qd2?
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...Kxg1
        • 2.Qxf2#
      • 1...Kf3!
    • 1.Qc2?
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...Kxg1
        • 2.Qxf2#
      • 1...Kf3!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qxf2#
      • 1...Kf1
        • 2.Qxf2#
      • 1...Kxg1
        • 2.Qxf2#
      • 1...fxg1Q
        • 2.Qh3#
      • 1...fxg1S
        • 2.Qf2#
      • 1...fxg1B
        • 2.Qh3#
      • 1...fxg1R
        • 2.Qf2#
        • 2.Qe2#
        • 2.Qh3#
      • 1...f1Q
        • 2.Qg3#
      • 1...f1S
        • 2.Qf2#
      • 1...f1B
        • 2.Qf2#
        • 2.Qg3#
      • 1...f1R
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(B)::QAB1(A),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(B)::QAB1(A),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
        • K(c);N_SPINP(b),P-FLIGHT,XB(B)::QAB1(A),XP(b)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • K(c);S_FLIGHT::QAR1(A),XP(b)
      • K(c);P-FLIGHT,P_SPINP(b),XB(B)::QAB1(A),XP(b)
      • P(b);SBLOCK,XB(B)::QAB1(A)
      • P(b);XB(B)::QAR1(A)
      • P(b);SBLOCK::QAR1(A)
      • P(b);::QAR1(A)
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