MESON Chess Problem Database

Problem Display
PID: 75396 (8/1KQp1P2/3Prn2/3kp1N1/1p2p1P1/1P1bP3/n2R2N1/B2B1R2 w - - 0 1)

Guida, Marco

The Problemist, 2007

8/1KQp1P2/3Prn2/3kp1N1/1p2p1P1/1P1bP3/n2R2N1/B2B1R2

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.Qa5#
      • 2.Qc4#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Qa5#
      • 1...Kxe5
        • 2.Rf5#
      • 1...Rxe5
        • 2.Sf4#
      • 1...Sc3!
    • 1.f8Q?
      • threat
        • 2.Qa5#
        • 2.Qc4#
      • 1...Sc3
        • 2.Qc4#
      • 1...Re7!
    • 1.f8B?
      • threat
        • 2.Qa5#
        • 2.Qc4#
      • 1...Sc3
        • 2.Qc4#
      • 1...Re7!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qc4#
      • 1...Kxe4
        • 2.Bf3#
      • 1...Sxe4
        • 2.Rxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);XP(f)
      • Threat
        • QAR(L)
      • Vars
        • K(e);N_SPINB(b),OGATEB,P-FLIGHT,XB(A)::R1(C)
        • R(g);SBLOCK,XB(A)::S(E)
      • Refutation
        • S(a);
    • Try
      • P(M);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(L)
      • Refutation
        • R(g);
    • Try
      • P(M);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAB1(L)
      • Refutation
        • R(g);
  • Actual
    • S(I);XP(d)
    • Threat
      • QAB1(L)
    • Vars
      • K(e);N_SPINB(b),OGATEB,S_FLIGHT,XS(I)::B(B)
      • S(h);SBLOCK,XS(I)::R(D),XB(b)
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