MESON Chess Problem Database

Problem Display
PID: 224479 (2Nk4/1Q6/4P3/bN2PK2/1p6/7p/3r1p2/5rnR w - - 0 1)

Valle, Giovanni Batista

Philadelphia Times, 1888

2Nk4/1Q6/4P3/bN2PK2/1p6/7p/3r1p2/5rnR

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qe7#
    • 1...Ra2
      • 2.Qd7#
    • 1...Rb2
      • 2.Qd7#
    • 1...Rc2
      • 2.Qd7#
    • 1...Re2
      • 2.Qd7#
    • 1...Rd7
      • 2.Qxd7#
  • Tries
    • 1.Sba7?
      • threat
        • 2.Qe7#
      • 1...Ke8
        • 2.Qe7#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Bc7!
    • 1.Scd6?
      • threat
        • 2.Qd7#
        • 2.e7#
      • 1...Bc7
        • 2.Qxc7#
      • 1...Rxd6!
    • 1.Rxh3?
      • threat
        • 2.Rh8#
      • 1...Ke8
        • 2.Rh8#
        • 2.Qe7#
      • 1...Sxh3!
    • 1.Qc6?
      • threat
        • 2.e7#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Bc7!
    • 1.Qc7+?
      • 1...Ke8
        • 2.Qe7#
      • 1...Bxc7!
    • 1.Qg7?
      • threat
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Ke8
        • 2.Qh8#
        • 2.Qe7#
        • 2.Qg8#
      • 1...Kxc8!
    • 1.Qh7?
      • threat
        • 2.Qg8#
        • 2.Qh8#
      • 1...Ke8
        • 2.Qg8#
        • 2.Qe7#
        • 2.Qh8#
      • 1...Kxc8!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qg8#
      • 1...Kxc8
        • 2.Qa8#
      • 1...Ke8
        • 2.Qg8#
      • 1...hxg2
        • 2.Rh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(h);P-FLIGHT::QAR1(F)
    • R(c);N_GUARD::QAR1(F)
    • R(c);N_GUARD::QAR1(F),XR(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(F)
      • Vars
        • K(h);P-FLIGHT::QAR1(F)
        • R(c);N_GUARD::QAR1(F),XR(c)
      • Refutation
        • B(g);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);N_GUARD::QAB1(F),XB(g)
      • Refutation
        • R(c);XS(G)
    • Try
      • R(A);XP(e)
      • Threat
        • R(A)
      • Refutation
        • S(b);XR(A)
    • Try
      • Q(F);
      • Threat
        • P(E)
      • Vars
        • R(c);N_GUARD::QAR1(F),XR(c)
      • Refutation
        • B(g);
    • Try
      • Q(F);CHECK
      • Vars
        • K(h);P-FLIGHT::QAR1(F)
      • Refutation
        • B(g);XQ(F)
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Refutation
        • K(h);P-FLIGHT,XS(G)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Refutation
        • K(h);P-FLIGHT,XS(G)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)
    • Vars
      • K(h);OGATEB,P-FLIGHT,XS(G)::QAR2(F)
      • K(h);P-FLIGHT::QAR2(F)
      • P(e);OGATE,XQ(F)::R(A)
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