MESON Chess Problem Database

Problem Display
PID: 287351 (8/5B2/8/8/3bkp2/1R5K/3Q4/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Uralski Problemist, 2005

8/5B2/8/8/3bkp2/1R5K/3Q4/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ba1
      • 2.Qd5#
    • 1...Bg1
      • 2.Qd5#
    • 1...Bb2
      • 2.Qd5#
    • 1...Bf2
      • 2.Qd5#
    • 1...Be3
      • 2.Qd5#
    • 1...Bc5
      • 2.Qd5#
    • 1...Be5
      • 2.Bg6#
      • 2.Qd3#
    • 1...Bb6
      • 2.Qd5#
    • 1...Bf6
      • 2.Qd5#
    • 1...Ba7
      • 2.Qd5#
    • 1...Bg7
      • 2.Qd5#
    • 1...Bh8
      • 2.Qd5#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Qxf4#
      • 1...Ke5
        • 2.Qxf4#
      • 1...Be3
        • 2.Qd5#
      • 1...Be5
        • 2.Bd5#
        • 2.Bg6#
        • 2.Qd3#
        • 2.Qd5#
      • 1...f3
        • 2.Qf4#
      • 1...Bc3!
    • 1.Qxd4+?
      • 1...Kf5
        • 2.Rb5#
      • 1...Kxd4!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Qxf4#
      • 1...Kxf3
        • 2.Bd5#
      • 1...Ke5
        • 2.Qxf4#
      • 1...Kf5
        • 2.Qxf4#
      • 1...Be3
        • 2.Qd5#
      • 1...Be5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • B(a);OGATE::QAB1(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A),XP(c)
        • B(a);OGATE::QAB1(A)
        • P(c);::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK,XB(a)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • R(B);
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XR(B)::B(D)
      • K(b);P-FLIGHT::QAB1(A),XP(c)
      • K(b);P_SPINP(c),S_FLIGHT::QAR1(A),XP(c)
      • B(a);OGATE::QAB1(A)
      • B(a);SBLOCK::QAB1(A)
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