MESON Chess Problem Database

Problem Display
PID: 22067 (7B/2R3r1/1p5n/1RbPN3/5K2/p1k1NP2/p7/nb1Q4 w - - 0 1)

Mari, Alberto

3rd Prize, Centurini MT, 1924

7B/2R3r1/1p5n/1RbPN3/5K2/p1k1NP2/p7/nb1Q4

#2

9 + 9

6230 Ajedrez Artistico 1968
3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.S5g4#
      • 2.Sg6#
    • 1...Rg2
      • 2.S5g4#
      • 2.Sg6#
    • 1...Rg3
      • 2.S5g4#
      • 2.Sg6#
    • 1...Rg4+
      • 2.S5xg4#
    • 1...Rg6
      • 2.Sxg6#
    • 1...Rd7
      • 2.Sxd7#
      • 2.Sf7#
    • 1...Rf7+
      • 2.Sxf7#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Sc2
      • 2.Qd3#
    • 1...Sb3
      • 2.Rxb3#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Rxc5#
      • 1...Rg4+
        • 2.S5xg4#
      • 1...Rf7+
        • 2.Sxf7#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Rxc7!
    • 1.d6?
      • threat
        • 2.Sd5#
      • 1...Rg4+
        • 2.S5xg4#
      • 1...Rf7+
        • 2.Sxf7#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Be4!
  • Keys
    • 1.S5c4!
      • threat
        • 2.Qd2#
      • 1...Bxe3+
        • 2.Sxe3#
      • 1...Bd6+
        • 2.Sxd6#
      • 1...Bd3
        • 2.Qxa1#
      • 1...Bb4
        • 2.Bxg7#
      • 1...Sb3
        • 2.Rxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(i);CHECK::B(I)+S(G),XR(i)
    • R(i);::B(I)+S(G),XR(i)
    • B(b);N_GUARD::QAR1(A),XB(b)
    • S(a);S_CUTB(b)::QAR1(A)
    • S(a);N_GUARD::R1(E),XS(a)
  • Tries
    • Try
      • R(E);XP(g)
      • Threat
        • R(H),XB(f)
      • Vars
        • R(i);CHECK::B(I)+S(G),XR(i)
        • B(b);N_GUARD::QAR1(A),XB(b)
        • S(a);N_GUARD::R1(E),XS(a)
      • Refutation
        • R(i);N_SPINB(f),XR(H)
    • Try
      • P(F);
      • Threat
        • S(B)
      • Vars
        • R(i);CHECK::B(I)+S(G),XR(i)
        • B(b);N_GUARD::QAR1(A),XB(b)
        • S(a);N_GUARD::R1(E),XS(a)
      • Refutation
        • B(b);
  • Actual
    • S(G);N_PINB(f),P_PINR(i)
    • Threat
      • QAB1(A)
    • Vars
      • B(f);CHECK,XS(B)::R(H)+S(G),XB(f)
      • B(f);CHECK::R(H)+S(G),XB(f)
      • B(b);OGATE,SBLOCK::QAB(A),XS(a)
      • B(f);N_GUARD::B(I),XR(i)
      • S(a);N_GUARD::R1(E),XS(a)
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