MESON Chess Problem Database

Problem Display
PID: 150323 (7q/3bB3/Rb6/3p4/2k1p3/2p5/2K3p1/Q7 w - - 0 1)

Abdullayev, Suleyman

Uralski Problemist, 2012

7q/3bB3/Rb6/3p4/2k1p3/2p5/2K3p1/Q7

#2

4 + 8

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qxc3#
    • 1...Kb5
      • 2.Qa4#
    • 1...Bh3
      • 2.Qa4#
    • 1...Ba4+
      • 2.Qxa4#
    • 1...Bg4
      • 2.Qa4#
    • 1...Bf5
      • 2.Qa4#
    • 1...Be6
      • 2.Qa4#
    • 1...Bc8
      • 2.Qa4#
  • Tries
    • 1.Ra4+?
      • 1...Bxa4+
        • 2.Qxa4#
      • 1...Kb5!
    • 1.Rxb6?
      • threat
        • 2.Rb4#
      • 1...Ba4+
        • 2.Qxa4#
      • 1...Kd4
        • 2.Qxc3#
      • 1...Qb8
        • 2.Qxc3#
      • 1...d4
        • 2.Qa2#
      • 1...Bb5!
    • 1.Qa2+?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kd4!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qb4#
      • 1...Ba4+
        • 2.Qxa4#
      • 1...Kd4
        • 2.Qxc3#
      • 1...Kb5
        • 2.Qa4#
      • 1...Ba5
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...d4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
    • K(c);S_FLIGHT::QAB1(A)
    • B(g);N_GUARD::QAR2(A)
    • B(g);CHECK,N_GUARD::QAR2(A),XB(g)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • B(g);CHECK,OGATE,XR(C)::QAR2(A),XB(g)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(C);XB(f)
      • Threat
        • R1(C)
      • Vars
        • B(g);CHECK,N_GUARD::QAR2(A),XB(g)
        • K(c);P-FLIGHT,P_SPINP(b)::QAB1(A),XP(b)
        • Q(h);N_GUARD::QAR1(A),XP(b)
        • P(e);SBLOCK::QAB(A)
      • Refutation
        • B(g);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • B(g);CHECK,N_GUARD::QAR2(A),XB(g)
      • K(c);P-FLIGHT::QAB1(A),XP(b)
      • K(c);S_FLIGHT::QAB1(A)
      • B(f);N_GUARD::QAR1(A)
      • B(f);N_GUARD::QAR1(A),XB(f)
      • P(e);SBLOCK::QAB1(A)
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