MESON Chess Problem Database

Problem Display
PID: 58883 (2Nn4/8/p1p5/Rbk2N2/3pP3/PR2r3/4QB2/4nKb1 w - - 0 1)

Zaldo Zapirain, Juan

SEPA, 1940

2Nn4/8/p1p5/Rbk2N2/3pP3/PR2r3/4QB2/4nKb1

#2

9 + 9

1099 WCSC 1981
5396 World Chess Solving Championship 1977-1996 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe2
      • 2.Rc3#
    • 1...Rc3
      • 2.Rxc3#
    • 1...Sd3
      • 2.Qc2#
    • 1...d3
      • 2.Rc3#
  • Keys
    • 1.Sfd6!
      • threat
        • 2.Qc4#
      • 1...Rxe2
        • 2.Rc3#
      • 1...d3
        • 2.Qxe3#
      • 1...Rc3
        • 2.Rxc3#
      • 1...Rd3
        • 2.Qh5#
      • 1...Sd3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,P_SPINP(d),XQ(B)::R(E)
    • R(c);N_GUARD,P_SPINP(d)::R(E),XR(c)
    • S(a);N_PINQ(B)::QAR(B)
    • P(d);N_GUARD,N_PINQ(B),P_SPINR(c)::R(E)
  • Actual
    • S(H);
    • Threat
      • QAR1(B)
    • Vars
      • R(c);N_GUARD,P_SPINP(d),XQ(B)::R(E)
      • P(d);N_PINQ(B),P_SPINR(c)::QAB(B),XR(c)
      • R(c);N_GUARD,P_SPINP(d)::R(E),XR(c)
      • R(c);N_PINQ(B),P_SPINP(d)::QAR(B)
      • S(a);N_PINQ(B)::QAR(B)
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