MESON Chess Problem Database

Problem Display
PID: 179037 (2b1R3/2Pp1P2/1p4P1/1p1kN2Q/rr1N2P1/Bp6/1K6/3R4 w - - 0 1)

Cristoffanini, Guido

Magasinet, 1931

2b1R3/2Pp1P2/1p4P1/1p1kN2Q/rr1N2P1/Bp6/1K6/3R4

#2

11 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Sxb3#
    • 1...Kd6
      • 2.Se6#
    • 1...Rc4
      • 2.Sef3#
      • 2.Sec6#
      • 2.Sxd7#
      • 2.Qh1#
    • 1...Rxd4
      • 2.Qh1#
  • Tries
    • 1.Sc2+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Rd4
        • 2.Qh1#
      • 1...Kc5!
    • 1.Sxb3+?
      • 1...Rd4
        • 2.Qh1#
      • 1...Ke4!
    • 1.Sef3+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc4!
    • 1.Sec6+?
      • 1...Kd6
        • 2.Qe5#
      • 1...Kc4!
    • 1.Sxd7+?
      • 1...Kc4
        • 2.Sxb6#
      • 1...Kd6!
    • 1.Qh1+?
      • 1...Kc5
        • 2.Sxb3#
      • 1...Kd6!
    • 1.f8Q?
      • threat
        • 2.Qh1#
      • 1...Ke4
        • 2.Sef3#
        • 2.Sc4#
        • 2.Sec6#
        • 2.Sxd7#
        • 2.Qf3#
      • 1...d6!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Sc4#
      • 1...Rc4+
        • 2.Sxc4#
      • 1...Ke4
        • 2.Sd3#
      • 1...Kc5
        • 2.Sxb3#
      • 1...Kd6
        • 2.Se6#
      • 1...Rxd4
        • 2.Qh1#
      • 1...d6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,P_SPINR(c)::S(D),XP(a)
    • K(e);P-FLIGHT,P_SPINR(c)::R(A)+S(D)
    • R(c);P_SPINR(c),XS(D)::QAB(G)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(G)
        • R(c);P_SPINR(c)::QAB(G)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(c)
    • Try
      • S(D);CHECK,P_SPINS(D),XP(a)
      • Vars
        • R(c);N_PINS(D),P_SPINR(c)::QAB(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(c)::QAB1(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(c)::QAB1(G)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(F);CHECK,XP(g)
      • Vars
        • K(e);S_FLIGHT::S(F),XP(f)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(c)
    • Try
      • Q(G);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINR(c)::S(D),XP(a)
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(c)
    • Try
      • P(J);
      • Threat
        • QAB(G)
      • Refutation
        • P(g);
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR(G)+S(F)
    • Vars
      • R(c);CHECK::QAR(G)+S(F),XR(c)
      • K(e);S_FLIGHT::R(K)+S(F)
      • K(e);P-FLIGHT,P_SPINR(c)::S(D),XP(a)
      • K(e);P-FLIGHT,P_SPINR(c)::R(A)+S(D)
      • R(c);P_SPINR(c),XS(D)::QAB(G)
      • P(g);SBLOCK::QAR(G)+S(F)
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