MESON Chess Problem Database

Problem Display
PID: 42303 (1q3r2/6pb/3p4/2p4Q/2NNk3/rRb3Pp/np1R1p2/1K3B2 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Hlas l'udu, 1984

1q3r2/6pb/3p4/2p4Q/2NNk3/rRb3Pp/np1R1p2/1K3B2

#2

8 + 13

3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Qxf3#
    • 1...Rc8
      • 2.Qf3#
    • 1...Rd8
      • 2.Qf3#
    • 1...Re8
      • 2.Qf3#
    • 1...Rg8
      • 2.Qf3#
    • 1...Rh8
      • 2.Qf3#
    • 1...Bxd4
      • 2.Bd3#
    • 1...Bf5
      • 2.Qf3#
    • 1...cxd4
      • 2.Bd3#
    • 1...d5
      • 2.Qe2#
  • Tries
    • 1.Bg2+?
      • 1...Rf3
        • 2.Bxf3#
        • 2.Qxf3#
      • 1...hxg2!
    • 1.Qg4+?
      • 1...Rf4
        • 2.Qe6#
      • 1...Kd5+!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Qg4#
      • 1...Rxf5
        • 2.Qe2#
      • 1...Bxd2
        • 2.Qf3#
      • 1...Bxf5
        • 2.Qe2#
      • 1...Bd4
        • 2.Qf3#
      • 1...Be5
        • 2.Qf3#
      • 1...d5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(m);N_GUARD::QAB1(H),XR(m)
    • R(m);N_GUARD::QAB1(H)
    • B(e);SBLOCK,XS(G)::B(B)
    • B(k);S_CUTR(m)::QAB1(H)
    • P(h);SBLOCK,XS(G)::B(B)
    • P(i);SBLOCK::QAR2(H)
  • Tries
    • Try
      • B(B);CHECK
      • Refutation
        • P(f);XB(B)
    • Try
      • Q(H);CHECK
      • Vars
        • R(m);P_SPINR(m)::QAR2(H)
      • Refutation
        • K(g);CHECK,S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • QAR2(H)
    • Vars
      • R(m);SBLOCK,XS(G)::QAR2(H)
      • B(e);XR(C)::QAB1(H)
      • B(k);SBLOCK,XS(G)::QAR2(H)
      • B(e);::QAB1(H)
      • P(i);SBLOCK::B(B)
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Developed and maintained by Brian Stephenson.
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