MESON Chess Problem Database

Problem Display
PID: 188553 (B3R3/KN6/n2p4/2Rpp1N1/Qp1k4/2ppp1B1/8/3b4 w - - 0 1)

Lamba, Stelian

Phenix, 1992

B3R3/KN6/n2p4/2Rpp1N1/Qp1k4/2ppp1B1/8/3b4

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Qxb4#
    • 1...Sc7
      • 2.Qxb4#
    • 1...Sb8
      • 2.Qxb4#
    • 1...c2
      • 2.Qa1#
    • 1...e2
      • 2.Bf2#
    • 1...e4
      • 2.Se6#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Se6#
        • 2.Rxd5#
      • 1...Sxc5
        • 2.Bxe5#
        • 2.Qxb4#
      • 1...d2
        • 2.Rxd5#
      • 1...e2
        • 2.Bf2#
      • 1...Bb3
        • 2.Se6#
      • 1...Bf3
        • 2.Se6#
      • 1...Bg4
        • 2.Rxd5#
      • 1...Sc7
        • 2.Qxb4#
      • 1...c2
        • 2.Se6#
      • 1...Kxc5!
    • 1.Rxd5+?
      • 1...Kc4
        • 2.Sa5#
        • 2.Sxd6#
      • 1...Kxd5!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Se6#
      • 1...Sxc5
        • 2.Qxb4#
      • 1...dxc5
        • 2.Bxe5#
      • 1...e2
        • 2.Bf2#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Bf3
        • 2.Sb3#
      • 1...Sc7
        • 2.Qxb4#
      • 1...c2
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(i);N_GUARD,XR(C)::QAR2(B),XP(e)
    • S(i);N_GUARD::QAR2(B),XP(e)
    • P(b);OGATEB::QAB(B)
    • P(d);OGATEB::B(A)
    • P(h);SBLOCK::S(D)
  • Tries
    • Try
      • S(F);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::R1(C),XP(g)
        • P(d);OGATEB::B(A)
        • B(a);::S(D)
        • B(a);::R1(C),XP(g)
        • S(i);N_GUARD::QAR2(B),XP(e)
        • P(b);::S(D)
      • Refutation
        • K(f);N_SPINP(e),S_FLIGHT,XR(C)
    • Try
      • R(C);CHECK,XP(g)
      • Refutation
        • K(f);N_SPINP(e),P-FLIGHT,XR(C)
  • Actual
    • S(F);
    • Threat
      • R1(C),XP(g)
    • Vars
      • K(f);N_SPINP(e),S_FLIGHT,XR(C)::S(D)
      • S(i);N_GUARD,XR(C)::QAR2(B),XP(e)
      • P(j);N_GUARD,SBLOCK,XR(C)::B(A),XP(h)
      • P(d);OGATEB::B(A)
      • B(a);N_GUARD::S(F),XB(a)
      • B(a);N_GUARD::S(F)
      • S(i);N_GUARD::QAR2(B),XP(e)
      • P(b);S_CUTB(a)::S(F)
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