MESON Chess Problem Database

Problem Display
PID: 62683 (4BK2/2B5/2n2p2/1bRQ4/kp4R1/8/1P6/nq1Nb3 w - - 0 1)

Lowery, J

Chess, 1944

4BK2/2B5/2n2p2/1bRQ4/kp4R1/8/1P6/nq1Nb3

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qxa2#
    • 1...Qc2
      • 2.Qa2#
    • 1...Qe4
      • 2.Qa2#
    • 1...Qf5
      • 2.Qa2#
    • 1...Qg6
      • 2.Qa2#
    • 1...Qh7
      • 2.Qa2#
    • 1...Qc1
      • 2.Qa2#
    • 1...Qxd1
      • 2.Qa2#
    • 1...Bf2
      • 2.Sc3#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Bg3
      • 2.Sc3#
    • 1...Bh4
      • 2.Sc3#
    • 1...Bf1
      • 2.Ra5#
    • 1...Be2
      • 2.Ra5#
    • 1...Bd3
      • 2.Ra5#
    • 1...Ba6
      • 2.Ra5#
    • 1...Sa5
      • 2.Bxb5#
    • 1...Se5
      • 2.Bxb5#
    • 1...Se7
      • 2.Bxb5#
    • 1...Sb8
      • 2.Bxb5#
    • 1...Sd8
      • 2.Bxb5#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Ra5#
      • 1...Sa5
        • 2.Rbxb4#
        • 2.Rxa5#
      • 1...Sb3!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Ra3#
      • 1...Qxb2
        • 2.Sxb2#
      • 1...Bxc3
        • 2.Sxc3#
      • 1...Qa2
        • 2.Qxa2#
      • 1...Qd3
        • 2.Qa2#
      • 1...Qe4
        • 2.Qa2#
      • 1...Bc4
        • 2.Qa5#
      • 1...Sc2
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sd4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 18
  • Sets
    • Q(b);N_GUARD::QAR2(E),XQ(b)
    • Q(b);N_GUARD::QAR2(E)
    • Q(b);N_GUARD,N_SPINP(e)::QAR2(E)
    • Q(b);N_GUARD,XS(A)::QAR2(E)
    • B(c);N_GUARD::S(A)
    • B(c);N_GUARD::S(A),XB(c)
    • B(f);OGATE,P_SPINS(g)::R1(D)
    • S(g);OGATE,P_SPINB(f)::B(G),XB(f)
  • Tries
    • Try
      • R(D);XB(f)
      • Threat
        • R1(D)
      • Refutation
        • S(a);
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • Q(b);XP(B)::S(A),XQ(b)
      • B(c);XR(D)::S(A),XB(c)
      • Q(b);N_GUARD::QAR2(E),XQ(b)
      • Q(b);N_GUARD::QAR2(E)
      • Q(b);N_GUARD,N_SPINP(e)::QAR2(E)
      • B(f);N_SPINP(e),OGATE,P_SPINS(g)::QAR1(E)
      • S(a);N_GUARD::QAB1(E)
      • S(a);N_GUARD::QAB1(E),XS(a)
      • S(g);N_SPINP(e),OGATE,P_SPINB(f)::QAR(E)
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