MESON Chess Problem Database

Problem Display
PID: 227848 (8/8/8/8/5nK1/5P2/5Qnk/6R1 w - - 0 1)

Pikler, Robert

Magyar Sakkvilag, 1926

8/8/8/8/5nK1/5P2/5Qnk/6R1

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qxg2#
    • 1...Sd3
      • 2.Qxg2#
    • 1...Sh3
      • 2.Qxg2#
    • 1...Sd5
      • 2.Qxg2#
    • 1...Sh5
      • 2.Qxg2#
    • 1...Se6
      • 2.Qxg2#
    • 1...Sg6
      • 2.Qxg2#
  • Tries
    • 1.Ra1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Rb1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Rc1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Rd1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Re1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Rf1?
      • threat
        • 2.Qg1#
        • 2.Qg3#
      • 1...Sh3
        • 2.Qg3#
      • 1...Sh5
        • 2.Qg1#
      • 1...Se2!
    • 1.Rxg2+?
      • 1...Kh1
        • 2.Rg1#
        • 2.Rh2#
        • 2.Qg1#
        • 2.Qf1#
      • 1...Sxg2!
  • Keys
    • 1.Kf5!
      • 1...Kh3
        • 2.Rh1#
      • 1...Se2
        • 2.Qxg2#
      • 1...Sd3
        • 2.Qxg2#
      • 1...Sh3
        • 2.Qxg2#
      • 1...Sd5
        • 2.Qxg2#
      • 1...Sh5
        • 2.Qxg2#
      • 1...Se6
        • 2.Qxg2#
      • 1...Sg6
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(B),XS(a)
  • Tries
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::QAB1(B)
      • Refutation
        • S(c);
    • Try
      • R(A);CHECK,XS(a)
      • Refutation
        • S(c);P_SPINS(c),XR(A)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT::R(A)
      • S(c);N_GUARD::QAR1(B),XS(a)
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