MESON Chess Problem Database

Problem Display
PID: 137594 (3rQ3/1N6/NPr5/4n2p/k5bR/PR6/P7/3B2bK w - - 0 1)

Nagy, Odon

2nd Prize, La Liberte, 0000

3rQ3/1N6/NPr5/4n2p/k5bR/PR6/P7/3B2bK

#2

10 + 7

881 The Australasian Chess Review 1929

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sac5#
    • 1...Bh2
      • 2.Sac5#
    • 1...Bc5
      • 2.Saxc5#
    • 1...Sd3
      • 2.Qxc6#
    • 1...Sf3
      • 2.Qxc6#
    • 1...Sc4
      • 2.Qxc6#
    • 1...Sg6
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qxc6#
  • Tries
    • 1.Rxg4+?
      • 1...Rd4
        • 2.Sac5#
      • 1...Bd4
        • 2.Sac5#
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qxc6#
      • 1...Sxg4
        • 2.Qxc6#
      • 1...hxg4!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Rd3#
      • 1...Rxd1
        • 2.Qa8#
      • 1...Rxe8
        • 2.Rc3#
      • 1...Rd2
        • 2.Qa8#
      • 1...Rd3
        • 2.Rxd3#
        • 2.Qa8#
      • 1...Rd4
        • 2.Qa8#
      • 1...Rd7
        • 2.Qa8#
      • 1...Bd4
        • 2.Rf3#
      • 1...Sd3
        • 2.Rc3#
        • 2.Rxd3#
        • 2.Qxc6#
      • 1...Sc4
        • 2.Qxc6#
      • 1...Sd7
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 6
  • Sets
    • R(g);N_SPINB(c),S_CUTB(a)::S(G)
    • B(a);N_GUARD::S(G)
    • B(a);N_GUARD::S(G),XB(a)
    • S(d);N_GUARD::QAB(J),XR(f)
    • S(d);N_GUARD,N_SPINB(c)::QAB(J),XR(f)
  • Tries
    • Try
      • R(F);CHECK,XB(c)
      • Vars
        • R(g);N_SPINR(f),P_SPINR(g)::S(G)
        • B(a);P_SPINB(a)::S(G)
        • S(d);XR(F)::QAB(J),XR(f)
      • Refutation
        • P(e);XR(F)
  • Actual
    • S(G);
    • Threat
      • B(A)+R(E)
    • Vars
      • R(g);OGATE,XB(A)::QAR(J)
      • R(g);N_GUARD,N_SPINR(f),XQ(J)::B(A)+R(E)
      • R(g);OGATE::QAR(J)
      • R(g);N_SPINB(c),OGATE::QAR(J)
      • R(g);N_SPINR(f),OGATE::QAR(J)
      • B(a);N_SPINB(c),S_CUTR(g)::B(A)+R(E)
      • S(d);N_GUARD,N_SPINB(c)::QAB(J),XR(f)
      • S(d);N_SPINR(f),S_CUTR(g)::B(A)+R(E)
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