MESON Chess Problem Database

Problem Display
PID: 164376 (2B5/2B2R2/2pN1r2/2p2N1R/1Q1r1k2/1b1P4/4P2P/4K3 w - - 0 1)

Petite, Efren

Schach, 2001

2B5/2B2R2/2pN1r2/2p2N1R/1Q1r1k2/1b1P4/4P2P/4K3

#2

11 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Qd2#
      • 1...Ke3
        • 2.Qd2#
      • 1...Rxb4
        • 2.Sc4#
      • 1...Rf5
        • 2.Sdxf5#
      • 1...Re4
        • 2.Qxe4#
      • 1...cxb4!
    • 1.Se8+?
      • 1...Kg4
        • 2.Sxf6#
      • 1...Rd6!
    • 1.Qd2+?
      • 1...Kg4
        • 2.Rh4#
        • 2.Qg5#
      • 1...Ke5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sg2#
      • 1...Kxe3
        • 2.Qd2#
      • 1...Rf5
        • 2.Sdxf5#
      • 1...Bd5
        • 2.Sdc4#
      • 1...Be6
        • 2.Sdf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE,P_PINP(B)::QAR1(E),XR(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(E)
      • Vars
        • K(c);N_SPINR(b),S_FLIGHT::QAB1(E)
        • R(b);N_GUARD,N_SPINR(b),P_SPINR(f),XQ(E)::B(I)+S(H)
        • R(f);N_GUARD::B(I)+S(H),XR(f)
        • R(b);OGATE,P_PINP(B)::QAR1(E),XR(b)
      • Refutation
        • P(d);N_SPINR(b),P_SPINR(f),XQ(E)
    • Try
      • S(H);CHECK
      • Vars
        • K(c);P-FLIGHT::S(H),XR(f)
      • Refutation
        • R(f);
    • Try
      • Q(E);CHECK,N_PINR(b)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(c);N_SPINR(b),OGATEB,S_FLIGHT,XS(F)::QAB1(E)
      • R(f);N_GUARD::B(I)+S(H),XR(f)
      • B(a);::B(I)+S(H)
      • B(a);S_CUTR(f)::B(I)+S(H)
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