MESON Chess Problem Database

Problem Display
PID: 242010 (8/8/2K5/8/3kpRp1/1Q4P1/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1935

8/8/2K5/8/3kpRp1/1Q4P1/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qd5#
  • Tries
    • 1.Rf1?
      • 1...Ke5
        • 2.Qd5#
      • 1...e3!
    • 1.Rf2?
      • 1...Ke5
        • 2.Qd5#
      • 1...e3!
    • 1.Rf6?
      • 1...Ke5
        • 2.Qb2#
        • 2.Qc3#
      • 1...e3!
    • 1.Rf7?
      • 1...Ke5
        • 2.Qd5#
      • 1...e3!
    • 1.Rf8?
      • 1...Ke5
        • 2.Qd5#
      • 1...e3!
    • 1.Qc2?
      • threat
        • 2.Rxe4#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Ke3!
    • 1.Qd3+?
      • 1...Ke5
        • 2.Qxe4#
        • 2.Qd5#
        • 2.Qd6#
      • 1...Kxd3!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Rxe4#
      • 1...Ke5
        • 2.Qxe4#
      • 1...Kxe3!
    • 1.Qf3?
      • threat
        • 2.Rxe4#
      • 1...Kc4
        • 2.Rxe4#
      • 1...Ke5
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...gxf3!
  • Keys
    • 1.Qa3!
      • 1...Kc4
        • 2.Rxe4#
      • 1...Ke5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),S_FLIGHT::QAR1(A)
  • Tries
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • R(C);N_PINP(b)
      • Refutation
        • P(b);
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • R1(C),XP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR1(A),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C),XP(b)
        • K(a);S_FLIGHT::QAR1(A),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • R1(C),XP(b)
      • Vars
        • K(a);P-FLIGHT::R(C),XP(b)
      • Refutation
        • P(c);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::R(C),XP(b)
      • K(a);N_SPINP(b),S_FLIGHT::QAB1(A)
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