MESON Chess Problem Database

Problem Display
PID: 55085 (6K1/2N1B2P/3N4/4k3/3pBpP1/2r5/7r/2Q5 w - - 0 1)

Ganapathi, Ramaswamy

The Problemist Supplement, 2004

6K1/2N1B2P/3N4/4k3/3pBpP1/2r5/7r/2Q5

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.h8Q#
      • 2.h8B#
    • 1...Rb2
      • 2.h8Q#
      • 2.h8B#
    • 1...Rhc2
      • 2.h8Q#
      • 2.h8B#
    • 1...Rd2
      • 2.h8Q#
      • 2.h8B#
    • 1...Re2
      • 2.h8Q#
      • 2.h8B#
    • 1...Rf2
      • 2.h8Q#
      • 2.h8B#
    • 1...Rg2
      • 2.h8Q#
      • 2.h8B#
    • 1...Ra3
      • 2.Qc5#
    • 1...Rb3
      • 2.Qc5#
    • 1...Rd3
      • 2.Qc5#
    • 1...Re3
      • 2.Qc5#
    • 1...Rf3
      • 2.Qc5#
    • 1...Rg3
      • 2.Qc5#
    • 1...Rh3
      • 2.Qc5#
    • 1...Rc5
      • 2.Qxc5#
    • 1...d3
      • 2.Qxc3#
    • 1...f3
      • 2.Qg5#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Sf7#
      • 1...Rxg2
        • 2.h8Q#
        • 2.h8B#
      • 1...Rxc7
        • 2.Qe1#
      • 1...d3
        • 2.Qxc3#
      • 1...Rf3
        • 2.Qc5#
      • 1...f3
        • 2.Qg5#
      • 1...Rxh7!
    • 1.Bd3?
      • threat
        • 2.Sf7#
      • 1...Rxh7
        • 2.Qe1#
      • 1...Rxd3
        • 2.Qc5#
      • 1...Rxc7!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Sf7#
      • 1...Rxh7
        • 2.Bd3#
      • 1...Rxc7
        • 2.Bg2#
      • 1...d3
        • 2.Qxc3#
      • 1...f3
        • 2.Qg3#
      • 1...Re2
        • 2.h8Q#
        • 2.h8B#
      • 1...Re3
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::P=Q
    • R(a);N_GUARD,P_PINP(C)::P=Q
    • R(b);OGATE::QAR2(A)
    • R(b);OGATE,P_PINP(C)::QAR2(A)
    • R(b);OGATE::QAR2(A),XR(b)
    • P(c);OGATEB::QAB(A),XR(b)
    • P(d);OGATE::QAR2(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • R(a);N_GUARD,P_PINP(C),XB(B)::P=Q
        • R(b);N_GUARD,XS(E)::QAR(A)
        • P(c);OGATEB::QAB(A),XR(b)
        • R(b);OGATE::QAR2(A)
        • P(d);OGATE::QAR2(A)
      • Refutation
        • R(a);XP(G)
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • R(a);N_GUARD,XP(G)::QAR(A)
        • R(b);OGATE,XB(B)::QAR2(A)
      • Refutation
        • R(b);XS(E)
  • Actual
    • Q(A);
    • Threat
      • S(D)
    • Vars
      • R(a);N_GUARD,XP(G)::QAR(A)+B(B)
      • R(b);N_GUARD,XS(E)::QAR(A)+B(B)
      • P(c);OGATEB::QAB(A),XR(b)
      • P(d);OGATEB::QAB(A)
      • R(a);N_GUARD::P=Q
      • R(b);OGATE::QAR(A)
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