MESON Chess Problem Database

Problem Display
PID: 278201 (6BB/3p1r2/K3RP2/5pp1/1QPk4/5PN1/4p3/bN3R2 w - - 0 1)

Ersek, Tibor

Stella Polaris, 1972

6BB/3p1r2/K3RP2/5pp1/1QPk4/5PN1/4p3/bN3R2

#2

11 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Kb5?
      • threat
        • 2.Qd2#
        • 2.Qd6#
      • 1...Kd3
        • 2.Qd2#
      • 1...exf1Q
        • 2.Qd6#
      • 1...exf1S
        • 2.Qd6#
      • 1...exf1B
        • 2.Qd6#
      • 1...e1Q
        • 2.Qd6#
      • 1...e1S
        • 2.Qd6#
      • 1...e1B
        • 2.Qd6#
      • 1...Bc3
        • 2.Qxc3#
        • 2.Qd6#
      • 1...d5
        • 2.Qd2#
      • 1...d6
        • 2.Qd2#
        • 2.Qxd6#
      • 1...dxe6!
    • 1.Rxe2?
      • threat
        • 2.Rd1#
      • 1...Rxf6+
        • 2.Qd6#
      • 1...Kd3
        • 2.Rd1#
      • 1...Bc3!
    • 1.Re4+?
      • 1...Kd3
        • 2.Qd2#
      • 1...fxe4!
    • 1.Rd6+?
      • 1...Ke3
        • 2.Qd2#
      • 1...Ke5!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sxf5#
      • 1...Rxf6+
        • 2.Qb6#
      • 1...Kxe3
        • 2.Qd2#
      • 1...f4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR1(E)
        • P(b);P_PINP(F),XR(B)::QAR2(E)
        • P(b);XR(B)::QAR2(E)
        • P(b);::QAR2(E)
        • P(f);::QAR2(E)
      • Refutation
        • P(f);XR(H)
    • Try
      • R(H);XP(b)
      • Threat
        • R(B)
      • Vars
        • R(g);CHECK,P_SPINR(g),XP(I)::QAR2(E)
        • K(c);P-FLIGHT::R(B)
      • Refutation
        • B(a);
    • Try
      • R(H);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT::QAR1(E)
      • Refutation
        • P(d);XR(H)
    • Try
      • R(H);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::QAB1(E)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(H);
    • Threat
      • S(D),XP(d)
    • Vars
      • R(g);CHECK,P_SPINR(g),XP(I)::QAB(E)
      • K(c);N_GUARD,S_FLIGHT,XR(H)::QAB1(E)
      • P(d);::S(D)
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