MESON Chess Problem Database

Problem Display
PID: 9970 (4K3/2B3pQ/6P1/1p2P3/1P1kP3/N1pqb1N1/8/3R4 w - - 0 1)

Parthasarathy, Dr Mukkur

Correspondence Chess, 1961

4K3/2B3pQ/6P1/1p2P3/1P1kP3/N1pqb1N1/8/3R4

#2

10 + 6

3147 Chess Problems: Introduction to an Art 1963

SOLUTION

  • SOUND
  • Tries
    • 1.Qg8?
      • threat
        • 2.Sc2#
        • 2.Sxb5#
        • 2.Qd5#
      • 1...Qxd1
        • 2.Qd5#
      • 1...Qd2
        • 2.Qd5#
      • 1...Bc1
        • 2.Sc2#
      • 1...Bg1
        • 2.Sc2#
      • 1...Bf2
        • 2.Sc2#
      • 1...Bf4
        • 2.Sc2#
      • 1...Bg5
        • 2.Sc2#
      • 1...Bh6
        • 2.Sc2#
      • 1...c2
        • 2.Sxb5#
      • 1...Bd2!
    • 1.Qh4?
      • threat
        • 2.Se2#
        • 2.Sf5#
        • 2.Qd8#
      • 1...Qxd1
        • 2.Qd8#
      • 1...Qd2
        • 2.Qd8#
      • 1...Bc1
        • 2.Sf5#
      • 1...Bg1
        • 2.Sf5#
      • 1...Bd2
        • 2.Sf5#
      • 1...Bf2
        • 2.Sf5#
      • 1...Bg5
        • 2.Sf5#
      • 1...Bh6
        • 2.Sf5#
      • 1...c2
        • 2.Se2#
      • 1...Bf4!
  • Keys
    • 1.Qxg7!
      • threat
        • 2.Bb6#
        • 2.Qd7#
        • 2.e6#
      • 1...Qxd1
        • 2.Qd7#
      • 1...Qd2
        • 2.Qd7#
      • 1...Bc1
        • 2.Bb6#
      • 1...Bg1
        • 2.Bb6#
      • 1...Bd2
        • 2.Bb6#
      • 1...Bf2
        • 2.Bb6#
      • 1...Bf4
        • 2.Bb6#
      • 1...Bg5
        • 2.Bb6#
      • 1...Bh6
        • 2.Bb6#
      • 1...c2
        • 2.e6#

This is after

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);N_SPINQ(b),XR(A)::QAR1(I)
        • Q(b);::QAR1(I)
        • B(c);::S(B)
        • P(a);::S(B),XP(e)
      • Refutation
        • B(c);N_SPINQ(b)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • Q(b);N_SPINQ(b),XR(A)::QAR(I)
        • Q(b);::QAR(I)
        • B(c);::S(C)
        • B(c);N_SPINQ(b)::S(C)
        • P(a);::S(C)
      • Refutation
        • B(c);
  • Actual
    • Q(I);XP(f)
    • Threat
      • DUALS(3)
    • Vars
      • Q(b);N_SPINQ(b),XR(A)::QAR(I)
      • Q(b);::QAR(I)
      • B(c);::B(H)
      • B(c);N_SPINQ(b)::B(H)
      • P(a);::QAB(I)+P(F)
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