MESON Chess Problem Database

Problem Display
PID: 107717 (3N4/4R3/K1pp4/3P4/3k2n1/1P3Q2/8/8 w - - 0 1)

Reggio, A

1st Prize, Pasquin, 1899

3N4/4R3/K1pp4/3P4/3k2n1/1P3Q2/8/8

#2

6 + 4

15 British Chess Magazine 1899
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Se6#
    • 1...c5
      • 2.Sc6#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Sxc6#
      • 1...cxd5
        • 2.Sc6#
      • 1...Se5
        • 2.Se6#
      • 1...c5
        • 2.Sc6#
      • 1...Se3!
    • 1.Re4+?
      • 1...Kc5
        • 2.Rc4#
      • 1...Kxd5!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Se6#
        • 2.Sb7#
        • 2.Qc4#
        • 2.b4#
      • 1...Kc3!
    • 1.Qc3+?
      • 1...Kxd5
        • 2.Qc4#
      • 1...Kxc3!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Kxd3!
  • Keys
    • 1.Re5!
      • 1...Kc5
        • 2.Qc3#
      • 1...Kxe5
        • 2.Sxc6#
      • 1...Sxe5
        • 2.Se6#
      • 1...cxd5
        • 2.Rxd5#
      • 1...dxe5
        • 2.Se6#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf2
        • 2.Qe3#
      • 1...Sh2
        • 2.Qe3#
      • 1...Sf6
        • 2.Qe3#
      • 1...Sh6
        • 2.Qe3#
      • 1...c5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(F)
    • P(c);SBLOCK::S(F)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • S(F),XP(c)
      • Vars
        • P(c);XP(C)::S(F)
        • S(b);SBLOCK::S(F)
        • P(c);::S(F)
      • Refutation
        • S(b);
    • Try
      • R(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::R1(E)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAR2(B)
      • K(a);S_FLIGHT,XR(E)::S(F),XP(c)
      • S(b);SBLOCK,XR(E)::S(F)
      • P(c);OGATE,XP(C)::R1(E),XP(c)
      • P(d);SBLOCK,XR(E)::S(F)
      • S(b);N_GUARD::QAB1(B),XS(b)
      • S(b);N_GUARD::QAB1(B)
      • P(c);SBLOCK::S(F)
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