MESON Chess Problem Database

Problem Display
PID: 238973 (8/2N1pr2/2Kb1N2/2np1B2/3P2r1/1pBpp3/1pk3bR/3RQ3 w - - 0 1)

Petite, Efren

Problemas, 2001

8/2N1pr2/2Kb1N2/2np1B2/3P2r1/1pBpp3/1pk3bR/3RQ3

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Bxd3#
    • 1...Sa6
      • 2.Bxd3#
    • 1...Se6
      • 2.Bxd3#
    • 1...Sb7
      • 2.Bxd3#
    • 1...Sd7
      • 2.Bxd3#
    • 1...b1S
      • 2.Rc1#
    • 1...b1B
      • 2.Rc1#
    • 1...e2
      • 2.Qd2#
  • Tries
    • 1.Sxg4?
      • threat
        • 2.Sxe3#
      • 1...e2
        • 2.Se3#
        • 2.Qd2#
      • 1...Bf4!
    • 1.Sfxd5?
      • threat
        • 2.Qe2#
      • 1...b1S
        • 2.Rc1#
      • 1...Re4
        • 2.Sb4#
      • 1...Se4
        • 2.Sxe3#
      • 1...e2
        • 2.Rd2#
        • 2.Qd2#
        • 2.Qxe2#
      • 1...Rxf5!
    • 1.Sb5?
      • threat
        • 2.Sa3#
        • 2.Qe2#
      • 1...b1S
        • 2.Rc1#
      • 1...Re4
        • 2.Sa3#
      • 1...Sa4
        • 2.Bxd3#
        • 2.Qe2#
      • 1...Sa6
        • 2.Bxd3#
        • 2.Qe2#
      • 1...Se6
        • 2.Bxd3#
        • 2.Qe2#
      • 1...Sb7
        • 2.Bxd3#
        • 2.Qe2#
      • 1...Sd7
        • 2.Bxd3#
        • 2.Qe2#
      • 1...e2
        • 2.Sa3#
        • 2.Rd2#
        • 2.Qd2#
        • 2.Qxe2#
      • 1...Se4!
    • 1.Rxg2+?
      • 1...e2
        • 2.Rxe2#
        • 2.Qd2#
      • 1...Rxg2!
  • Keys
    • 1.Scxd5!
      • threat
        • 2.Qe2#
      • 1...b1S
        • 2.Rc1#
      • 1...Re4
        • 2.Sb4#
      • 1...Se4
        • 2.Sxe3#
      • 1...e2
        • 2.Rd2#
        • 2.Qd2#
        • 2.Qxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • S(h);N_GUARD::B(F),XP(e)
    • P(a);N_GUARD::R1(A)
    • P(f);N_GUARD,N_SPINB(c)::QAR1(B)
  • Tries
    • Try
      • S(H);XR(g)
      • Threat
        • S(H),XP(f)
      • Refutation
        • B(j);
    • Try
      • S(H);P_SPINS(H),XP(i)
      • Threat
        • QAR2(B)
      • Vars
        • P(a);N_GUARD::R1(A)
        • R(g);N_PINS(H),N_SPINP(e)::S(H)
        • S(h);N_PINS(H),N_SPINP(e)::S(H),XP(f)
      • Refutation
        • R(l);N_SPINP(e),XB(F)
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);N_GUARD::R1(A)
        • R(g);N_SPINP(e)::S(I)
      • Refutation
        • S(h);N_SPINP(e)
    • Try
      • R(C);CHECK,XB(c)
      • Refutation
        • R(g);XR(C)
  • Actual
    • S(I);P_SPINS(I),XP(i)
    • Threat
      • QAR2(B)
    • Vars
      • P(a);N_GUARD::R1(A)
      • R(g);N_PINS(I),N_SPINP(e)::S(I)
      • S(h);N_PINS(I),N_SPINP(e)::S(I),XP(f)
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