MESON Chess Problem Database

Problem Display
PID: 271065 (3R3B/4p3/Q1p5/Nr1p3N/4k1B1/Rb4P1/3Pn3/4K3 w - - 0 1)

Zuk, Henryk

The Observer, 1960

(First published on Sun Jan 31 1960)

3R3B/4p3/Q1p5/Nr1p3N/4k1B1/Rb4P1/3Pn3/4K3

#2

10 + 7

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SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bf5#
    • 1...Rb4
      • 2.Qxe2#
    • 1...Rxa5
      • 2.Qxe2#
    • 1...Rc5
      • 2.Qxe2#
    • 1...Rb6
      • 2.Qxe2#
    • 1...Rb7
      • 2.Qxe2#
    • 1...Rb8
      • 2.Qxe2#
    • 1...Bd1
      • 2.Re3#
    • 1...Ba2
      • 2.Re3#
    • 1...Bc2
      • 2.Re3#
    • 1...Ba4
      • 2.Re3#
    • 1...Bc4
      • 2.Re3#
    • 1...c5
      • 2.Qg6#
  • Keys
    • 1.Rxd5!
      • 1...Kxd5
        • 2.Qxc6#
      • 1...Rxa5
        • 2.Qd3#
      • 1...Rxd5
        • 2.Qxe2#
      • 1...Bxd5
        • 2.Re3#
      • 1...Sxg3
        • 2.Rd4#
      • 1...cxd5
        • 2.Qg6#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Rb4
        • 2.Qd3#
      • 1...Rc5
        • 2.Qd3#
      • 1...Rb6
        • 2.Qd3#
      • 1...Rb7
        • 2.Qd3#
      • 1...Rb8
        • 2.Qd3#
      • 1...Bd1
        • 2.Bf3#
      • 1...Ba2
        • 2.Bf3#
      • 1...Bc2
        • 2.Bf3#
      • 1...Ba4
        • 2.Bf3#
      • 1...Bc4
        • 2.Bf3#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sg1
        • 2.Rd4#
      • 1...Sc3
        • 2.Rd4#
      • 1...Sf4
        • 2.Rd4#
      • 1...c5
        • 2.Qe6#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Sf6#

This anticipates 278342(1972)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 12
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • K(c);N_GUARD,P_SPINB(b),P_SPINP(e),P_SPINR(d),S_FLIGHT::B(E)
    • R(d);OGATE::QAR2(H),XS(a)
    • R(d);OGATE,XS(F)::QAR2(H),XS(a)
    • B(b);OGATE::R1(C)
    • P(f);OGATE::QAB(H)
  • Actual
    • R(I);XP(e)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(I)::QAB1(H),XP(f)
      • R(d);OGATE,XS(F)::QAB1(H)
      • R(d);OGATE,SBLOCK,XR(I)::QAR2(H),XS(a)
      • B(b);OGATE,SBLOCK,XR(I)::R1(C)
      • S(a);N_GUARD,XP(D)::R1(I)
      • P(f);OGATE,SBLOCK,XR(I)::QAB(H)
      • S(a);N_GUARD::R1(I),XS(a)
      • R(d);OGATE::QAB1(H)
      • B(b);::B(E)
      • S(a);N_GUARD::R1(I)
      • P(f);OGATE::QAR2(H)
      • P(g);N_GUARD::S(G)
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