MESON Chess Problem Database

Problem Display
PID: 140535 (1q1N4/1B1pB1Q1/N1npRK1p/p2k1p2/1pp5/1RP2p2/3rP3/6n1 w - - 0 1)

Richter, Frank

StrateGems, 2006

1q1N4/1B1pB1Q1/N1npRK1p/p2k1p2/1pp5/1RP2p2/3rP3/6n1

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...dxe6
      • 2.Bxc6#
  • Tries
    • 1.Re3?
      • threat
        • 2.Qf7#
        • 2.Qg8#
      • 1...Qxd8
        • 2.Qf7#
      • 1...bxc3!
    • 1.Qf7?
      • threat
        • 2.Re3#
        • 2.Re5#
      • 1...dxe6
        • 2.Bxc6#
        • 2.Qxe6#
      • 1...bxc3!
    • 1.Qg8?
      • threat
        • 2.Re3#
        • 2.Re5#
      • 1...Qxd8
        • 2.Re5#
      • 1...dxe6
        • 2.Bxc6#
        • 2.Qxe6#
      • 1...bxc3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qxf5#
      • 1...Qxb7
        • 2.Rxd6#
      • 1...Rxe2
        • 2.Qd4#
      • 1...bxc3
        • 2.Rb5#
      • 1...cxb3
        • 2.c4#
      • 1...fxg4
        • 2.e4#
      • 1...dxe6
        • 2.Bxc6#
      • 1...f4
        • 2.Qf5#
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(l);N_GUARD,XR(E)::B(G),XS(i)
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(m);P_PINB(H),XS(J)::QAB(I)
      • Refutation
        • P(d);XP(C)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • P(d);XP(C)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(m);P_PINB(H),XS(J)::QAB(I)+R(E),DCHECK
      • Refutation
        • P(d);XP(C)
  • Actual
    • Q(I);
    • Threat
      • QAR2(I),XP(h)
    • Vars
      • Q(m);N_GUARD,N_SPINS(i),XB(G)::R1(E),XP(j)
      • R(b);N_GUARD,XP(A)::QAR1(I)
      • P(d);OGATE,XP(C)::R(B)
      • P(e);OGATE,XR(B)::P(C)
      • P(h);N_GUARD,XQ(I)::P(A)
      • P(l);N_GUARD,XR(E)::B(G),XS(i)
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