MESON Chess Problem Database

Problem Display
PID: 229058 (8/B3N3/4R2p/1P2n3/QP2k2p/1P1n2RN/2r3p1/1Bbb2K1 w - - 0 1)

Filaretov, Sergei P

64 Shakhmatnoe obozrenie, 1926

8/B3N3/4R2p/1P2n3/QP2k2p/1P1n2RN/2r3p1/1Bbb2K1

#2

11 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bxd3#
    • 1...Rb2
      • 2.Bxd3#
    • 1...Rd2
      • 2.Re3#
    • 1...Re2
      • 2.Bxd3#
    • 1...Rf2
      • 2.Bxd3#
    • 1...Rc4
      • 2.Bxd3#
    • 1...Rc5
      • 2.bxc5#
    • 1...Rc6
      • 2.Bxd3#
    • 1...Rc7
      • 2.Bxd3#
    • 1...Rc8
      • 2.Bxd3#
    • 1...Bb2
      • 2.Re3#
    • 1...Ba3
      • 2.Re3#
    • 1...Be3+
      • 2.Rxe3#
    • 1...Sxb4
      • 2.Qxb4#
    • 1...Sf4
      • 2.Sf2#
    • 1...Sc5
      • 2.bxc5#
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qa8#
      • 1...Be3+
        • 2.Rxe3#
      • 1...Rxc5
        • 2.bxc5#
      • 1...Sxb4
        • 2.Qxb4#
      • 1...Sxc5
        • 2.bxc5#
      • 1...Ra2
        • 2.Bxd3#
      • 1...Sf4
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • R(c);N_SPINS(h),OGATE,P_SPINS(e)::B(A),XS(e)
    • R(c);N_SPINS(h),P_SPINS(e),S_CUTB(a)::R1(D)
    • R(c);N_SPINS(h),OGATE,P_SPINS(e)::QAR(F)+P(G),XR(c)
    • B(a);N_GUARD::R1(D)
    • B(a);CHECK,N_GUARD::R1(D),XB(a)
    • S(e);N_SPINS(h),OGATE,P_SPINR(c),P_SPINS(e),XP(G)::QAR(F),XS(e)
    • S(e);N_GUARD,P_SPINR(c),SBLOCK::S(E)
    • S(e);OGATE,P_SPINR(c)::QAR(F)+P(G),XS(e)
  • Actual
    • B(J);
    • Threat
      • QAB(F)
    • Vars
      • B(a);CHECK,N_GUARD::R1(D),XB(a)
      • R(c);N_SPINS(h),OGATE,P_SPINS(e),XB(J)::QAR(F)+P(G),XR(c)
      • S(e);N_SPINS(h),OGATE,P_SPINR(c),P_SPINS(e),XP(G)::QAR(F),XS(e)
      • S(e);OGATE,P_SPINR(c),XB(J)::QAR(F)+P(G),XS(e)
      • R(c);N_SPINS(h),OGATE,P_SPINS(e)::B(A),XS(e)
      • S(e);N_GUARD,P_SPINR(c),SBLOCK::S(E)
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