MESON Chess Problem Database

Problem Display
PID: 168405 (8/N5P1/2R1P3/KN1k1pp1/p2B1n1R/1p3P2/2r1r3/2Qb1B2 w - - 0 1)

Petite, Efren

Zadachi i Etyudi, 1998

8/N5P1/2R1P3/KN1k1pp1/p2B1n1R/1p3P2/2r1r3/2Qb1B2

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Rd6#
      • 2.Qc4#
      • 2.Qc5#
    • 1...Rb2
      • 2.Rd6#
      • 2.Qc4#
      • 2.Qc5#
    • 1...Rcd2
      • 2.Rd6#
      • 2.Qc4#
      • 2.Qc5#
    • 1...Rc4
      • 2.Rd6#
      • 2.Qxc4#
    • 1...Rc5
      • 2.Rd6#
      • 2.Qxc5#
    • 1...Rxc6
      • 2.Qxc6#
    • 1...Re1
      • 2.Rd6#
    • 1...Red2
      • 2.Rd6#
    • 1...Rf2
      • 2.Rd6#
    • 1...Rg2
      • 2.Rd6#
    • 1...Rh2
      • 2.Rd6#
    • 1...Re3
      • 2.Rd6#
    • 1...Re4
      • 2.Rd6#
    • 1...Re5
      • 2.Rd6#
    • 1...Sg2
      • 2.Sc7#
    • 1...Sd3
      • 2.Sc7#
    • 1...Sh3
      • 2.Sc7#
    • 1...Sh5
      • 2.Sc7#
    • 1...Sg6
      • 2.Sc7#
  • Tries
    • 1.Bxe2?
      • threat
        • 2.Rd6#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sxe2
        • 2.Sc7#
      • 1...Sd3
        • 2.Sc7#
      • 1...Bxe2!
    • 1.Rxf4?
      • threat
        • 2.Sc7#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Rc5
        • 2.Rd6#
        • 2.Qxc5#
      • 1...Re4
        • 2.Rd6#
      • 1...gxf4!
    • 1.g8S?
      • threat
        • 2.Sf6#
        • 2.Se7#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Sh5
        • 2.Sc7#
        • 2.Se7#
      • 1...Sg6
        • 2.Sc7#
        • 2.Sf6#
      • 1...Rxe6!
  • Keys
    • 1.g8Q!
      • threat
        • 2.Qd8#
      • 1...Rxc6
        • 2.Qxc6#
      • 1...Rxe6
        • 2.Rd6#
      • 1...Sxe6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • R(b);OGATE,XR(H)::QAB1(A),XR(b)
    • R(c);::R1(H)
    • S(f);::S(G)
  • Tries
    • Try
      • B(B);XR(c)
      • Threat
        • R1(H)
      • Vars
        • R(b);OGATE,XR(H)::QAB1(A),XR(b)
        • S(f);XB(B)::S(G)
        • S(f);::S(G)
      • Refutation
        • B(a);XB(B)
    • Try
      • R(E);XS(f)
      • Threat
        • S(G)
      • Vars
        • R(b);OGATE,XR(H)::QAB1(A),XR(b)
        • R(c);::R1(H)
      • Refutation
        • P(i);XR(E)
    • Try
      • P(K);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);OGATE,XR(H)::QAB1(A),XR(b)
      • Refutation
        • R(c);XP(I)
  • Actual
    • P(K);
    • Threat
      • QAR(K)
    • Vars
      • R(b);OGATE,XR(H)::QAB1(A),XR(b)
      • R(c);P_SPINR(c),XP(I)::R1(H)
      • S(f);P_SPINS(f),XP(I)::S(G)
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