MESON Chess Problem Database

Problem Display
PID: 158049 (Q7/8/6NK/8/4R3/5b1k/8/5N2 w - - 0 1)

Antipov, Viacheslav Pavlovich

Sa ogneupory, 1986

Q7/8/6NK/8/4R3/5b1k/8/5N2

#2

5 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Rh4#
    • 1...Bh1
      • 2.Rh4#
    • 1...Be2
      • 2.Rh4#
    • 1...Bg2
      • 2.Rh4#
      • 2.Qc8#
    • 1...Bh5
      • 2.Rh4#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qxf3#
      • 1...Kg4
        • 2.Qxf3#
        • 2.Qc8#
      • 1...Kg2!
    • 1.Qb8?
      • threat
        • 2.Qh2#
        • 2.Qg3#
      • 1...Bxe4
        • 2.Qg3#
      • 1...Kg2!
    • 1.Qc8+?
      • 1...Bg4
        • 2.Qxg4#
      • 1...Kg2!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg3#
        • 2.Qxf3#
      • 1...Kxg4
        • 2.Qc8#
      • 1...Bxg4
        • 2.Qh1#
      • 1...Bxa8
        • 2.Rg3#
      • 1...Bd1
        • 2.Rg3#
        • 2.Rh4#
        • 2.Qg2#
      • 1...Bh1
        • 2.Rg3#
        • 2.Rh4#
      • 1...Be2
        • 2.Rg3#
        • 2.Rh4#
        • 2.Qg2#
      • 1...Bg2
        • 2.Rg3#
        • 2.Rh4#
        • 2.Qxg2#
      • 1...Be4
        • 2.Rg3#
      • 1...Bd5
        • 2.Rg3#
      • 1...Bc6
        • 2.Rg3#
      • 1...Bb7
        • 2.Rg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • B(a);::R1(B)
  • Tries
    • Try
      • R(B);P_PINB(a)
      • Threat
        • QAR2(E),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XR(B)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(E),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(B)::QAB(E)
      • B(a);OGATE,SBLOCK,XR(B)::QAR2(E)
      • B(a);XQ(E)::R1(B)
      • B(a);::R1(B)
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