MESON Chess Problem Database

Problem Display
PID: 157732 (3N1Q2/6p1/6pb/K3k1rn/4P1PB/2P3p1/6P1/4R3 w - - 0 1)

Palkoska, Emil

Source?, 1901

3N1Q2/6p1/6pb/K3k1rn/4P1PB/2P3p1/6P1/4R3

#2

9 + 7

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Bxg3#
  • Tries
    • 1.Bxg3+?
      • 1...Sf4
        • 2.Bxf4#
        • 2.Qe7#
        • 2.Qxf4#
      • 1...Sxg3!
    • 1.Bxg5?
      • threat
        • 2.Qc5#
        • 2.Qe7#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sf6
        • 2.Qe7#
      • 1...Bxg5!
    • 1.Rf1?
      • threat
        • 2.Qe7#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Kxe4+!
    • 1.Qc5+?
      • 1...Kf6
        • 2.e5#
      • 1...Kf4!
  • Keys
    • 1.Qb4!
      • 1...Kf4+
        • 2.e5#
      • 1...Kf6+
        • 2.e5#
      • 1...Rxg4
        • 2.Qb8#
      • 1...Rf5
        • 2.Qb8#
      • 1...Sf4
        • 2.Qd4#
      • 1...Sf6
        • 2.Bxg3#
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(d);N_GUARD::B(F),XP(a)
  • Tries
    • Try
      • B(F);CHECK,XP(a)
      • Refutation
        • S(d);XB(F)
    • Try
      • B(F);XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);N_GUARD::QAB1(I),XS(d)
        • S(d);::QAR2(I)
      • Refutation
        • B(f);XB(F)
    • Try
      • R(A);
      • Threat
        • QAR2(I)
      • Vars
        • S(d);N_GUARD::QAB1(I),XS(d)
      • Refutation
        • K(b);CHECK,P-FLIGHT,XP(D)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);OGATE,P_PINQ(I),P_SPINR(c),S_FLIGHT::P(D)
      • Refutation
        • K(b);P_PINQ(I),S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(b);CHECK,OGATE,S_FLIGHT::QAR(I)+P(D)
      • K(b);CHECK,OGATE,P_SPINR(c),S_FLIGHT::P(D)
      • R(c);XP(E)::QAB(I)
      • R(c);::QAB(I)
      • S(d);SBLOCK::QAB1(I)
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