MESON Chess Problem Database

Problem Display
PID: 7834 (6nB/3B2n1/1p1PP1N1/2Pk4/1P2r3/1P3K1R/2NP4/7Q w - - 0 1)

Reitman, Mark

2nd HM., Israel Ring Ty., 1994

6nB/3B2n1/1p1PP1N1/2Pk4/1P2r3/1P3K1R/2NP4/7Q

#2

13 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Kxe2#
    • 1...Re3+
      • 2.Kxe3#
    • 1...Rd4
      • 2.Se3#
    • 1...Rf4+
      • 2.Kxf4#
    • 1...Rg4
      • 2.Kxg4#
    • 1...Re5
      • 2.Sf4#
  • Tries
    • 1.Se3+?
      • 1...Rxe3+
        • 2.Kxe3#
      • 1...Kd4!
    • 1.Sf4+?
      • 1...Rxf4+
        • 2.Kxf4#
      • 1...Ke5!
    • 1.Qa1?
      • threat
        • 2.Qa8#
      • 1...Re3+
        • 2.Sxe3#
      • 1...Rf4+
        • 2.Sxf4#
      • 1...Rxb4
        • 2.Qe5#
      • 1...Se7
        • 2.Sxe7#
      • 1...bxc5!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Rd3#
      • 1...Sxe6
        • 2.Se3#
      • 1...Sf5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);::QAB(A)+K(E),XR(a)
    • R(a);CHECK::QAB(A)+K(E),XR(a)
    • R(a);N_GUARD,SBLOCK::S(B)
    • R(a);N_GUARD,SBLOCK::S(K)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • R(a);CHECK,XS(B)::QAB(A)+K(E),XR(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(d)
    • Try
      • S(K);CHECK
      • Vars
        • R(a);CHECK,XS(K)::QAB(A)+K(E),XR(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(d)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • R(a);CHECK,N_GUARD::S(B),XR(a)
        • R(a);CHECK,N_GUARD::S(K),XR(a)
        • R(a);N_GUARD,XP(G)::QAR1(A)
        • S(e);N_GUARD::S(K),XS(e)
      • Refutation
        • P(c);XP(H)
  • Actual
    • K(E);P-FLIGHT,P_PINR(a)
    • Threat
      • R(F)
    • Vars
      • S(d);XP(J)::S(B)
      • S(d);::S(K)
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