MESON Chess Problem Database

Problem Display
PID: 124542 (7b/5r2/2q2p1p/3BP2K/1RPkP2Q/N2Np3/nP2P3/2r5 w - - 0 1)

Sankaran, Nandakumar

Internet, 1998

7b/5r2/2q2p1p/3BP2K/1RPkP2Q/N2Np3/nP2P3/2r5

#2

11 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Sxb5#
    • 1...Qxd5
      • 2.exd5#
    • 1...Qa8
      • 2.Sb5#
    • 1...Qxc4
      • 2.Sb5#
    • 1...Qd6
      • 2.Sb5#
    • 1...Qe6
      • 2.Sb5#
    • 1...Qc7
      • 2.Sb5#
    • 1...Qc8
      • 2.Sb5#
    • 1...Ra1
      • 2.Sc2#
    • 1...Rb1
      • 2.Sc2#
    • 1...Rd1
      • 2.Sc2#
    • 1...Re1
      • 2.Sc2#
    • 1...Rf1
      • 2.Sc2#
    • 1...Rg1
      • 2.Sc2#
    • 1...Rh1
      • 2.Sc2#
    • 1...Rc2
      • 2.Sxc2#
    • 1...Rxc4
      • 2.Sc2#
    • 1...Sc3
      • 2.c5#
    • 1...f5
      • 2.exf5#
  • Tries
    • 1.c5+?
      • 1...Rc4
        • 2.Sc2#
        • 2.Rxc4#
      • 1...Sxb4!
  • Keys
    • 1.e6!
      • threat
        • 2.e5#
      • 1...Qxd5+
        • 2.exd5#
      • 1...Qxc4
        • 2.Sb5#
      • 1...Qxe6
        • 2.Sb5#
      • 1...Rxc4
        • 2.Sc2#
      • 1...Rf1
        • 2.Sc2#
      • 1...Rg1
        • 2.Sc2#
      • 1...Rh1
        • 2.Sc2#
      • 1...Rg7
        • 2.Qxf6#
      • 1...Sc3
        • 2.c5#
      • 1...f5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(e);N_GUARD::S(C),XQ(e)
    • Q(e);OGATE,P_PINP(J),XB(I)::QAR(H)+P(G),XQ(e)
    • Q(e);N_GUARD::S(C)
    • Q(e);N_GUARD,P_SPINQ(e),XP(F)::S(C)
    • R(a);N_GUARD::S(C)
    • R(a);N_GUARD,P_PINQ(H)::S(C)
    • R(a);N_GUARD::S(C),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(F)::S(C)
    • S(b);N_GUARD,S_CUTR(a)::R(E)+P(F)
    • P(f);OGATE::QAR(H)+P(G),XP(f)
  • Tries
    • Try
      • P(F);CHECK
      • Refutation
        • S(b);XR(E)
  • Actual
    • P(J);
    • Threat
      • QAR(H)+P(G)
    • Vars
      • Q(e);CHECK,OGATE,XB(I)::QAR(H)+P(G),XQ(e)
      • Q(e);N_GUARD,P_SPINQ(e),XP(F)::S(C)
      • Q(e);N_GUARD,XP(J)::S(C)
      • R(a);N_GUARD,P_SPINR(a),XP(F)::S(C)
      • R(a);N_GUARD::S(C)
      • R(a);N_GUARD,P_PINQ(H)::S(C)
      • R(h);N_GUARD,S_CUTB(i)::QAB(H),XP(f)
      • S(b);N_GUARD,S_CUTR(a)::R(E)+P(F)
      • P(f);OGATE::QAR(H)+P(G),XP(f)
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