MESON Chess Problem Database

Problem Display
PID: 67041 (B1Q1K3/2PRP3/2n5/n1P2p2/2p1k3/2B3P1/8/3N2N1 w - - 0 1)

Rice, John Michael

Problem Observer, 2006

B1Q1K3/2PRP3/2n5/n1P2p2/2p1k3/2B3P1/8/3N2N1

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Bxc6#
  • Tries
    • 1.Bf6?
      • threat
        • 2.Rd4#
      • 1...Sb3
        • 2.Bxc6#
      • 1...Sb7!
    • 1.Bg7?
      • threat
        • 2.Rd4#
      • 1...Sb3
        • 2.Bxc6#
      • 1...Sb7!
    • 1.Bh8?
      • threat
        • 2.Rd4#
      • 1...Sb3
        • 2.Bxc6#
      • 1...Sb7!
    • 1.Rd5?
      • threat
        • 2.Qxf5#
      • 1...Kxd5
        • 2.Qxf5#
      • 1...Sxe7
        • 2.Qe6#
      • 1...Se5
        • 2.Rd4#
      • 1...f4
        • 2.Qf5#
      • 1...Sd4!
    • 1.Qa6?
      • 1...Sb7
        • 2.Qxc6#
      • 1...Sb3
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...f4!
    • 1.Qb7?
      • threat
        • 2.Qb1#
      • 1...Sb3
        • 2.Qxc6#
      • 1...Sxb7!
    • 1.Qb8?
      • threat
        • 2.Qb1#
      • 1...Sb3
        • 2.Bxc6#
      • 1...Sb7!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sf2#
      • 1...Kxd3
        • 2.Qxf5#
      • 1...cxd3
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD::B(I),XS(e)
  • Tries
    • Try
      • B(C);
      • Threat
        • R1(G)
      • Vars
        • S(c);N_GUARD::B(I),XS(e)
      • Refutation
        • S(c);N_SPINS(e)
    • Try
      • B(C);
      • Threat
        • R1(G)
      • Vars
        • S(c);N_GUARD::B(I),XS(e)
      • Refutation
        • S(c);N_SPINS(e)
    • Try
      • B(C);
      • Threat
        • R1(G)
      • Vars
        • S(c);N_GUARD::B(I),XS(e)
      • Refutation
        • S(c);N_SPINS(e)
    • Try
      • R(G);N_PINS(e)
      • Threat
        • QAB1(J),XP(d)
      • Vars
        • K(b);P_SPINS(e),S_FLIGHT,XR(G)::QAR2(J),XP(d)
        • S(e);N_GUARD,XP(H)::QAR2(J)
        • S(e);SBLOCK::B(I)+R(G),DCHECK
        • P(d);::QAB1(J)
      • Refutation
        • S(e);
    • Try
      • Q(J);
      • Vars
        • S(c);N_GUARD,N_SPINS(e)::QAB(J),XS(e)
      • Refutation
        • P(d);
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(c);N_GUARD::QAB(J),XS(e)
      • Refutation
        • S(c);N_SPINS(e),XQ(J)
    • Try
      • Q(J);
      • Threat
        • QAB(J)
      • Vars
        • S(c);N_GUARD::B(I),XS(e)
      • Refutation
        • S(c);N_SPINS(e)
  • Actual
    • R(G);
    • Threat
      • S(A)
    • Vars
      • K(b);N_SPINS(e),S_FLIGHT,XR(G)::QAB(J),XP(d)
      • P(a);SBLOCK,XR(G)::QAR2(J)
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