MESON Chess Problem Database

Problem Display
PID: 207308 (8/8/2N2PBP/3Q1PkP/2N2RPR/p7/P6K/8 w - - 0 1)

Santiago, Joao Baptista

Il Problema, 1962

8/8/2N2PBP/3Q1PkP/2N2RPR/p7/P6K/8

#2

13 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qd8#
  • Tries
    • 1.Kg3?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6!
    • 1.S4e5?
      • 1...Kxh4
        • 2.Sf3#
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Sf7#
      • 1...Kxf4!
    • 1.Sd4?
      • 1...Kxf4
        • 2.Se6#
      • 1...Kxh4
        • 2.Sf3#
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6!
    • 1.S6e5?
      • 1...Kxh4
        • 2.Sf3#
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Sf7#
      • 1...Kxf4!
    • 1.Rf1?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Qd2#
      • 1...Kxh4!
    • 1.Rf2?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Qd2#
      • 1...Kxh4!
    • 1.Rf3?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Qd2#
      • 1...Kxh4!
    • 1.Re4?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Qd2#
      • 1...Kxh4!
    • 1.Qd2?
      • 1...Kxf6
        • 2.Qd8#
      • 1...Kxh6
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
        • 2.Rd4#
        • 2.Re4#
      • 1...Kxh4!
  • Keys
    • 1.Qg2!
      • 1...Kxf4
        • 2.g5#
      • 1...Kxh4
        • 2.g5#
      • 1...Kxf6
        • 2.g5#
      • 1...Kxh6
        • 2.g5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XP(M)
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT,XR(F)::S(C)
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::S(C)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • S(J);
      • Vars
        • K(b);S_FLIGHT,XR(D)::S(J)
        • K(b);S_FLIGHT,XR(F)::S(J)
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XP(M)
    • Try
      • S(J);
      • Vars
        • K(b);S_FLIGHT,XR(F)::S(J)
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::S(J)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
        • K(b);S_FLIGHT,XP(M)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,S_FLIGHT,XP(K)::QAB(G)
      • Refutation
        • K(b);S_FLIGHT,XR(F)
  • Actual
    • Q(G);
    • Vars
      • K(b);OGATE,S_FLIGHT,XR(D)::R(F)+P(E)
      • K(b);OGATE,S_FLIGHT,XR(F)::R(D)+P(E)
      • K(b);OGATE,S_FLIGHT,XP(K)::P(E)
      • K(b);OGATE,S_FLIGHT,XP(M)::P(E)
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