MESON Chess Problem Database

Problem Display
PID: 149732 (1B6/3p4/2b2p2/2RP2RK/4Np1N/4kB2/1qP5/Qr6 w - - 0 1)

Subotic, Miroslav

The Problemist, 2013

1B6/3p4/2b2p2/2RP2RK/4Np1N/4kB2/1qP5/Qr6

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sf5#
    • 1...Qc1
      • 2.Qc3#
    • 1...Qc3
      • 2.Qxc3#
    • 1...Qa2
      • 2.Qc3#
    • 1...Qb6
      • 2.Qc3#
    • 1...Qb7
      • 2.Qc3#
    • 1...Qxb8
      • 2.Qc3#
    • 1...Rg1
      • 2.Qxg1#
  • Tries
    • 1.Kg4?
      • threat
        • 2.Sf5#
      • 1...Rg1+
        • 2.Qxg1#
      • 1...f5+
        • 2.Sxf5#
      • 1...Kd4
        • 2.Sf5#
      • 1...Qe5
        • 2.Sg2#
      • 1...Qxc2!
    • 1.Bxf4+?
      • 1...Kd4
        • 2.Sf5#
      • 1...Kxf4!
    • 1.Rc3+?
      • 1...Qxc3
        • 2.Qxc3#
      • 1...Kd4!
    • 1.Qa7?
      • threat
        • 2.Rc3#
      • 1...Kd4
        • 2.Sf5#
      • 1...Qc3
        • 2.Rxc3#
      • 1...Qb6!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Rc3#
      • 1...Kd4
        • 2.Rxc6#
      • 1...Qc3
        • 2.Rxc3#
        • 2.Qxc3#
      • 1...Qb6
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • K(c);P_SPINQ(b),S_FLIGHT::S(E)
    • Q(b);OGATE::QAR2(A)
    • Q(b);OGATE::QAR2(A),XQ(b)
    • Q(b);OGATE,XB(J)::QAR2(A)
    • R(a);OGATE::QAB(A),XR(a)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • S(E)
      • Vars
        • R(a);CHECK,OGATE::QAB(A),XR(a)
        • P(f);CHECK::S(E),XP(f)
        • K(c);P_SPINQ(b),S_FLIGHT::S(E)
        • Q(b);::S(E)
      • Refutation
        • Q(b);XP(B)
    • Try
      • B(J);CHECK,XP(d)
      • Vars
        • K(c);P_SPINQ(b),S_FLIGHT::S(E)
      • Refutation
        • K(c);S_FLIGHT,XB(J)
    • Try
      • R(F);CHECK
      • Vars
        • Q(b);OGATE,XR(F)::QAR2(A),XQ(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(F),DCHECK
      • Vars
        • K(c);S_FLIGHT::S(E)
        • Q(b);::QAB(A)+R(F),DCHECK,XQ(b)
      • Refutation
        • Q(b);
  • Actual
    • B(J);
    • Threat
      • B(J)+R(F),DCHECK
    • Vars
      • K(c);P_SPINQ(b),S_FLIGHT::B(J)+R(F),XB(e)
      • Q(b);OGATE::QAR2(A)
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