MESON Chess Problem Database

Problem Display
PID: 228980 (3RB3/1N1N4/K2pr3/Rp1kP3/7Q/2P2p2/3rb3/8 w - - 0 1)

Mari, Alberto

2nd Prize=, El Ajedrez Argentino, 1926

3RB3/1N1N4/K2pr3/Rp1kP3/7Q/2P2p2/3rb3/8

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...dxe5+
      • 2.Sb6#
  • Tries
    • 1.Sf6+?
      • 1...Kxe5
        • 2.Qg5#
      • 1...Rxf6!
    • 1.Rxb5+?
      • 1...Kc6
        • 2.Rc8#
      • 1...Bxb5+!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Rc8#
      • 1...Rxd4!
    • 1.c4+?
      • 1...Kc6
        • 2.Rc8#
      • 1...Bxc4!
  • Keys
    • 1.Sdc5!
      • threat
        • 2.Qe4#
      • 1...b4+
        • 2.Sd3#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Rxe5
        • 2.Rxd6#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Bd3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(f);CHECK,SBLOCK,XP(D)::R(H)+S(G),DCHECK
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(D)::QAR2(B)
      • Refutation
        • R(g);XS(G)
    • Try
      • R(C);CHECK,P_SPINR(C),XP(d)
      • Vars
        • K(e);S_FLIGHT::R(H)
      • Refutation
        • B(b);CHECK,XR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);N_SPINP(d),S_FLIGHT::R(H)
      • Refutation
        • R(a);XQ(B)
    • Try
      • P(A);CHECK
      • Vars
        • K(e);N_SPINP(d),S_FLIGHT::R(H)
      • Refutation
        • B(b);XP(A)
  • Actual
    • S(G);N_PINP(d),P_PINP(f)
    • Threat
      • QAB1(B)
    • Vars
      • P(d);CHECK::R(C)+S(G)
      • K(e);N_SPINP(f),OGATEB,P-FLIGHT,XP(D)::QAR2(B)
      • R(g);N_GUARD,SBLOCK,XP(D)::R1(H),XP(f)
      • R(a);N_GUARD::QAR1(B),XR(a)
      • B(b);S_CUTR(a)::QAR1(B)
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