MESON Chess Problem Database

Problem Display
PID: 64112 (8/8/1n2Q3/B5K1/3p2Bn/3k1p2/5R2/3r4 w - - 0 1)

von Sponer, Gyorgy Janos Andor

Magyar Sakkvilag, 1913

8/8/1n2Q3/B5K1/3p2Bn/3k1p2/5R2/3r4

#2

5 + 6

3310 2345 Chess Problems 1997
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Rd2#
    • 1...Rb1
      • 2.Rd2#
    • 1...Rc1
      • 2.Rd2#
    • 1...Re1
      • 2.Rd2#
    • 1...Rf1
      • 2.Rd2#
    • 1...Rg1
      • 2.Rd2#
    • 1...Rh1
      • 2.Rd2#
    • 1...Rd2
      • 2.Rxd2#
    • 1...Sg2
      • 2.Bf5#
    • 1...Sf5
      • 2.Bxf5#
    • 1...Sg6
      • 2.Bf5#
  • Keys
    • 1.Re2!
      • 1...fxe2
        • 2.Qxe2#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Sd5
        • 2.Qa6#
      • 1...Sa4
        • 2.Qa6#
      • 1...Ra1
        • 2.Rd2#
      • 1...Rb1
        • 2.Rd2#
      • 1...Rc1
        • 2.Rd2#
      • 1...Re1
        • 2.Rd2#
      • 1...Rf1
        • 2.Rd2#
      • 1...Rg1
        • 2.Rd2#
      • 1...Rh1
        • 2.Rd2#
      • 1...Sg2
        • 2.Bf5#
      • 1...Sf5
        • 2.Bxf5#
      • 1...Sg6
        • 2.Bf5#
      • 1...Sc4
        • 2.Qe4#
      • 1...Sd7
        • 2.Qa6#
      • 1...Sa8
        • 2.Qa6#
      • 1...Sc8
        • 2.Qa6#
      • 1...f2
        • 2.Qb3#

This anticipates 266590(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::R1(A)
    • R(a);N_GUARD,P_PINB(B)::R1(A)
    • R(a);N_GUARD::R1(A),XR(a)
    • S(e);N_GUARD::B(B)
    • S(e);N_GUARD::B(B),XS(e)
  • Actual
    • R(A);
    • Vars
      • P(c);OGATE,XR(A)::QAB1(E),XP(c)
      • R(a);N_GUARD::R1(A),XR(a)
      • S(f);OGATE::QAB(E)
      • R(a);N_GUARD::R1(A)
      • R(a);N_GUARD,P_PINB(B)::R1(A)
      • S(e);N_GUARD::B(B)
      • S(e);N_GUARD::B(B),XS(e)
      • S(f);SBLOCK::QAB1(E)
      • P(c);::QAR2(E)
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