MESON Chess Problem Database

Problem Display
PID: 149269 (6K1/3pN1B1/nQ1Pkp2/1N2q3/5P2/4p3/4R3/3r4 w - - 0 1)

Agostini, Valerio

Comm., Mariani-50 JT, 2011

6K1/3pN1B1/nQ1Pkp2/1N2q3/5P2/4p3/4R3/3r4

#2

8 + 7

4901 Best Problems 2011
15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.Rxe3#
    • 1...Sb4
      • 2.Sc7#
    • 1...Sc5
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...Sb8
      • 2.Sc7#
  • Tries
    • 1.Qxe3?
      • threat
        • 2.f5#
      • 1...Qxe3
        • 2.Rxe3#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Rf1
        • 2.Qb3#
      • 1...f5
        • 2.Qxe5#
      • 1...Rxd6!
  • Keys
    • 1.Rxe3!
      • threat
        • 2.f5#
      • 1...Qxe3
        • 2.Qxe3#
      • 1...Rxd6
        • 2.Qxd6#
      • 1...Qe4
        • 2.Rxe4#
      • 1...Rf1
        • 2.Sd4#
      • 1...f5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(c);OGATEB,P_SPINP(b),P_SPINQ(c),XP(E)::R(A),XP(b)
    • S(d);N_GUARD::S(C)
    • S(d);N_GUARD::S(C),XS(d)
  • Tries
    • Try
      • Q(D);P_PINQ(c),XP(b)
      • Threat
        • P(B)
      • Vars
        • Q(c);OGATE,XQ(D)::R(A),XQ(c)
        • Q(c);OGATEB::QAR2(D),XQ(c)
        • R(a);N_GUARD::QAB(D)
        • P(f);N_GUARD::QAR1(D),XQ(c)
      • Refutation
        • R(a);XP(E)
  • Actual
    • R(A);P_PINQ(c),XP(b)
    • Threat
      • P(B)
    • Vars
      • Q(c);N_SPINQ(c),OGATE,XR(A)::QAR(D),XQ(c)
      • R(a);OGATE,P_SPINR(a),XP(E)::QAR1(D),XR(a)
      • Q(c);OGATEB::R(A),XQ(c)
      • R(a);N_GUARD::S(C)
      • P(f);N_GUARD::R1(A),XQ(c)
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