MESON Chess Problem Database

Problem Display
PID: 198759 (2Q5/3RK3/p1pp2p1/R1n1nkB1/p2b2bP/1p1P1p2/8/1B6 w - - 0 1)

Pasqualini, Giulio

L'Italia Scacchistica, 1921

2Q5/3RK3/p1pp2p1/R1n1nkB1/p2b2bP/1p1P1p2/8/1B6

#2

8 + 12

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Scxd3
      • 2.Bxd3#
    • 1...Se4
      • 2.Rxd6#
      • 2.Ra7#
      • 2.Rb7#
      • 2.Rc7#
      • 2.Rd8#
      • 2.dxe4#
    • 1...Sb7
      • 2.Rxd6#
      • 2.Rxb7#
      • 2.Rc7#
      • 2.Rd8#
      • 2.Qf8#
    • 1...Scxd7
      • 2.Qxd7#
  • Tries
    • 1.Rxc5?
      • threat
        • 2.Rxd6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Rd8#
        • 2.Qf8#
      • 1...dxc5
        • 2.Rd5#
      • 1...Bh3
        • 2.Rxd6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Rd8#
      • 1...Bh5
        • 2.Rxd6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Rd8#
      • 1...d5
        • 2.Rdxd5#
      • 1...Bxc5!
    • 1.Rxd6+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Scd7
        • 2.Rf6#
        • 2.Qxd7#
      • 1...Sed7!
    • 1.Ra7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Scd7
        • 2.Qxd7#
      • 1...Sed7!
    • 1.Rb7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Scd7
        • 2.Qxd7#
      • 1...Sed7!
    • 1.Rc7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Scd7
        • 2.Qxd7#
      • 1...Sed7!
    • 1.Rd8+?
      • 1...Se6
        • 2.Rf8#
        • 2.Qxe6#
      • 1...Scd7
        • 2.Rf8#
        • 2.Qxd7#
      • 1...Sed7!
  • Keys
    • 1.Kxd6!
      • threat
        • 2.Rf7#
      • 1...Se4+
        • 2.dxe4#
      • 1...Sb7+
        • 2.Rxb7#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Sf7+
        • 2.Rxf7#
      • 1...Scxd3
        • 2.Bxd3#
      • 1...Scxd7
        • 2.Qxd7#
      • 1...Sexd3
        • 2.Bxd3#
        • 2.Re7#
      • 1...Sexd7
        • 2.Qxd7#

This is a version of 95686

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);OGATE,P_SPINS(f),XP(B)::B(A),XS(f)
    • S(f);OGATE,P_SPINS(g),XR(F)::QAB(H),XS(f)
  • Tries
    • Try
      • R(D);P_PINS(g),XS(f)
      • Threat
        • DUALS(6)
      • Vars
        • P(k);N_SPINS(g),OGATE,XR(D)::QAB(H)+R(F)
        • P(k);N_SPINS(g),OGATE::QAB(H)+R(F),XP(k)
      • Refutation
        • B(d);N_SPINS(g),XR(D)
    • Try
      • R(F);CHECK,XP(k)
      • Vars
        • S(f);N_GUARD,P_SPINS(g)::QAB1(H),XS(f)
      • Refutation
        • S(g);P_SPINS(f)
    • Try
      • R(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(g)::QAB1(H),XS(f)
        • S(f);N_GUARD,P_SPINS(g)::QAB(H),XS(f)
      • Refutation
        • S(g);P_SPINS(f)
    • Try
      • R(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(g)::QAB1(H),XS(f)
        • S(f);N_GUARD,P_SPINS(g)::QAB(H),XS(f)
      • Refutation
        • S(g);P_SPINS(f)
    • Try
      • R(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(g)::QAB1(H),XS(f)
        • S(f);N_GUARD,P_SPINS(g)::QAB(H),XS(f)
      • Refutation
        • S(g);P_SPINS(f)
    • Try
      • R(F);CHECK
      • Refutation
        • S(g);P_SPINS(f)
  • Actual
    • K(G);S_FLIGHT,XP(k)
    • Threat
      • QAB(H)+R(F),DCHECK
    • Vars
      • S(f);CHECK,OGATE,P_SPINS(g)::P(B),XS(f)
      • S(f);CHECK,N_GUARD,P_SPINS(g)::QAB(H)+R(F),XS(f)
      • S(g);CHECK,OGATE,P_SPINS(f)::B(A)+P(B),XS(g)
      • S(g);CHECK,P_SPINS(f)::QAB(H)+R(F),DCHECK,XS(g)
      • S(f);OGATE,P_SPINS(f),XP(B)::B(A),XS(f)
      • S(f);OGATE,P_SPINS(g),XR(F)::QAB(H),XS(f)
      • S(g);OGATE,P_SPINS(f),XR(F)::QAB(H),XS(g)
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