MESON Chess Problem Database

Problem Display
PID: 80903 (3r4/2PB1N2/2RP1p1B/4P2K/1p1Nk2p/2P5/Q1PR1qP1/3r4 w - - 0 1)

Pituk, Alexander

1st HM., Themes-64, 1980

3r4/2PB1N2/2RP1p1B/4P2K/1p1Nk2p/2P5/Q1PR1qP1/3r4

#2

14 + 7

6424 Czech Album (1979-1981) 1986

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Bf5#
    • 1...Qg1
      • 2.Bf5#
    • 1...Qe3
      • 2.Bf5#
    • 1...Qg3
      • 2.Bf5#
    • 1...Qxd2
      • 2.Bf5#
    • 1...Qe2+
      • 2.Rxe2#
    • 1...Qxg2
      • 2.Bf5#
    • 1...Qf3+
      • 2.gxf3#
    • 1...Qf5+
      • 2.Bxf5#
  • Tries
    • 1.Re2+?
      • 1...Qe3
        • 2.Bf5#
        • 2.Rxe3#
      • 1...Qxe2+!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Bc6#
      • 1...Qe2+
        • 2.Sxe2#
      • 1...Qf3+
        • 2.Sxf3#
      • 1...Qf5+
        • 2.Sxf5#
      • 1...Kd5
        • 2.Bc6#
      • 1...Qxd4
        • 2.Rcxd4#
      • 1...Rxd7
        • 2.Qa8#
      • 1...Qf4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::B(M)
    • Q(b);N_GUARD,XR(C)::B(M)
    • Q(b);CHECK,N_GUARD::R(C),XQ(b)
    • Q(b);N_GUARD,XP(D)::B(M)
    • Q(b);CHECK,OGATE::P(D),XQ(b)
    • Q(b);CHECK,N_GUARD::B(M),XQ(b)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • Q(b);CHECK,XR(C)
  • Actual
    • R(I);
    • Threat
      • B(M)
    • Vars
      • Q(b);CHECK,N_GUARD::R(I)+S(F),XQ(b)
      • K(d);S_FLIGHT::B(M)
      • Q(b);OGATE,P_SPINQ(b),XS(F)::R1(I),XQ(b)
      • R(g);N_GUARD,XB(M)::QAB(A)
      • Q(b);N_GUARD::R(I)+S(F)
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